Robert F. Keefer

590 total citations
22 papers, 349 citations indexed

About

Robert F. Keefer is a scholar working on Pollution, Geochemistry and Petrology and Soil Science. According to data from OpenAlex, Robert F. Keefer has authored 22 papers receiving a total of 349 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Pollution, 5 papers in Geochemistry and Petrology and 4 papers in Soil Science. Recurrent topics in Robert F. Keefer's work include Heavy metals in environment (6 papers), Coal and Its By-products (4 papers) and Agricultural Science and Fertilization (2 papers). Robert F. Keefer is often cited by papers focused on Heavy metals in environment (6 papers), Coal and Its By-products (4 papers) and Agricultural Science and Fertilization (2 papers). Robert F. Keefer collaborates with scholars based in United States and Uganda. Robert F. Keefer's co-authors include D. K. Bhumbla, Rahul Singh, Kenneth S. Sajwan, A. K. Alva, Eton E. Codling, James M. Gorman, J. Sencindiver, G. R. Buss, Rishikesh Singh and G.J. Flick and has published in prestigious journals such as Soil Science Society of America Journal, Agriculture Ecosystems & Environment and Journal of Animal Science.

In The Last Decade

Robert F. Keefer

21 papers receiving 314 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Robert F. Keefer United States	9	208	142	95	82	42	22	349
Gao Shu Bulgaria	5	269 1.3×	84 0.6×	65 0.7×	89 1.1×	46 1.1×	5	402
M. G. Hickey United States	7	249 1.2×	74 0.5×	52 0.5×	37 0.5×	53 1.3×	11	340
Xingfu Xian Japan	5	378 1.8×	67 0.5×	59 0.6×	73 0.9×	117 2.8×	10	464
Lloyd E. Deuel United States	9	177 0.9×	125 0.9×	26 0.3×	88 1.1×	44 1.0×	31	320
Raquel Arnaldos Spain	5	334 1.6×	167 1.2×	128 1.3×	50 0.6×	113 2.7×	5	485
Encarnación Díaz Barrientos Spain	3	304 1.5×	64 0.5×	42 0.4×	68 0.8×	28 0.7×	4	355
RG Gerritse	9	281 1.4×	102 0.7×	37 0.4×	62 0.8×	74 1.8×	13	417
Sun-Jae You United States	5	258 1.2×	87 0.6×	49 0.5×	77 0.9×	45 1.1×	12	432
L.F. Lorenzo Spain	9	332 1.6×	79 0.6×	42 0.4×	133 1.6×	47 1.1×	12	458
B. M. Onken United States	9	197 0.9×	195 1.4×	40 0.4×	77 0.9×	66 1.6×	10	351

Countries citing papers authored by Robert F. Keefer

Since Specialization

Citations

This map shows the geographic impact of Robert F. Keefer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Robert F. Keefer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Robert F. Keefer more than expected).

Fields of papers citing papers by Robert F. Keefer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Robert F. Keefer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Robert F. Keefer. The network helps show where Robert F. Keefer may publish in the future.

Co-authorship network of co-authors of Robert F. Keefer

This figure shows the co-authorship network connecting the top 25 collaborators of Robert F. Keefer. A scholar is included among the top collaborators of Robert F. Keefer based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Robert F. Keefer. Robert F. Keefer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Sajwan, Kenneth S., A. K. Alva, & Robert F. Keefer. (2003). Chemistry of Trace Elements in Fly Ash. 33 indexed citations

Gorman, James M., et al.. (2000). Erodibility of Fly Ash Used as a Topsoil Substitute in Mineland Reclamation. Journal of Environmental Quality. 29(3). 805–811. 29 indexed citations

Sajwan, Kenneth S., A. K. Alva, & Robert F. Keefer. (1999). Biogeochemistry of Trace Elements in Coal and Coal Combustion Byproducts. 36 indexed citations

Keefer, Robert F.. (1999). Handbook of Soils for Landscape Architects. Oxford University Press eBooks. 8 indexed citations

Keefer, Robert F., et al.. (1994). Metal-organic associations in two extracts from nine soils amended with three sewage sludges. Agriculture Ecosystems & Environment. 50(2). 151–163. 2 indexed citations

Bhumbla, D. K. & Robert F. Keefer. (1994). Arsenic mobilization and bioavailability in soils.. 121 indexed citations

Gorman, James M., et al.. (1991). Physical Properties of Fly Ash-Treated Minesoils. Journal American Society of Mining and Reclamation. 1991(1). 389–402.

Singh, Rahul & Robert F. Keefer. (1989). Uptake of nickel and cadmium by vegetables grown on soil amended with different sewage sludges. Agriculture Ecosystems & Environment. 25(1). 27–38. 10 indexed citations

Keefer, Robert F., et al.. (1988). Selenium Uptake by Alfalfa and Wheat Grown on a Mine Spoil Reclaimed with Fly Ash. Journal American Society of Mining and Reclamation. 1988(2). 15–21. 2 indexed citations

10.

Keefer, Robert F. & Rahul Singh. (1986). CORRELATION OF METAL-ORGANIC FRACTIONS WITH SOIL PROPERTIES IN SEWAGE-SLUDGE-AMENDED SOILS. Soil Science. 142(1). 20–26. 9 indexed citations

11.

Keefer, Robert F., et al.. (1986). Chemical Composition of Vegetables Grown on an Agricultural Soil Amended with Sewage Sludges. Journal of Environmental Quality. 15(2). 146–152. 34 indexed citations

12.

Aung, L. H., G.J. Flick, G. R. Buss, et al.. (1984). Growth responses of crop plants to fish soluble nutrients fertilization. VTechWorks (Virginia Tech). 7 indexed citations

13.

Keefer, Robert F., et al.. (1978). The Response of Strawberry Yields to Soil Fumigation and Nitrogen Fertilization1. HortScience. 13(1). 51–52. 5 indexed citations

14.

Keefer, Robert F. & R. N. Singh. (1977). Crop Response to Added Organic Residues in Uganda Soils. East African Agricultural and Forestry Journal. 42(4). 388–396. 1 indexed citations

15.

Keefer, Robert F., et al.. (1975). Serum Magnesium Levels of Ewes Grazing Orchardgrass Topdressed with Dolomite or Calcite. Journal of Animal Science. 41(1). 198–202. 3 indexed citations

16.

Keefer, Robert F., et al.. (1972). Response of Corn to Time and Rate of Phosphorus and Zine Application. Soil Science Society of America Journal. 36(4). 628–632. 5 indexed citations

17.

Keefer, Robert F., et al.. (1971). THE FATE OF ZINC-65 APPLIED TO TWO SOILS AS ZINC SULFATE AND ZINC-EDTA. Soil Science. 112(5). 325–329. 2 indexed citations

18.

Keefer, Robert F., et al.. (1970). Alteration of the micronutrient composition of corn (Zea mays L.) by heavy N, P and K application.. 42. 100–108. 2 indexed citations

19.

Keefer, Robert F., et al.. (1968). A Model Demonstrating Use of Linear Programming in Determining Optimum Economic Crop Production from Soils Under Different Management Schemes¹. Agronomy Journal. 60(3). 272–274. 1 indexed citations

20.

Keefer, Robert F., F. L. Himes, & J. L. Mortensen. (1966). Evidence Indicating the Presence of Loosely‐Bound Phenolic Groupings in Soil Organic Matter Extracts. Soil Science Society of America Journal. 30(3). 415–416. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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