This map shows the geographic impact of L. S. Ritchie'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 L. S. Ritchie with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites L. S. Ritchie more than expected).
This network shows the impact of papers produced by L. S. Ritchie. 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 L. S. Ritchie. The network helps show where L. S. Ritchie may publish in the future.
Co-authorship network of co-authors of L. S. Ritchie
This figure shows the co-authorship network connecting the top 25 collaborators of L. S. Ritchie.
A scholar is included among the top collaborators of L. S. Ritchie 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 L. S. Ritchie. L. S. Ritchie is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
McMullen, Donald B., L. S. Ritchie, J. Oliver-gonzález, & Wilda B. Knight. (1967). Long-term studies on the course of primary and challenge infections.. American Journal of Tropical Medicine and Hygiene. 16(5).1 indexed citations
5.
Ritchie, L. S., et al.. (1963). MOLLUSCICIDAL QUALITIES OF SODIUM PENTACHLOROPHENATE (NAPCP) REVEALED BY 6-HOUR AND 24-HOUR EXPOSURES AGAINST REPRESENTATIVE STAGES AND SIZES OF AUSTRALORBIS GLABRATUS.. PubMed. 29. 421–4.7 indexed citations
6.
Ritchie, L. S., et al.. (1963). Characterization of a relatively insoluble molluscicide: cuprous oxide.. Journal of Parasitology. 49.1 indexed citations
7.
Ritchie, L. S., et al.. (1962). Population dynamics of Australorbis glabratus in Puerto Rico.. PubMed. 27. 171–81.11 indexed citations
8.
Ritchie, L. S., et al.. (1961). Biological potentials of Australorbis glabratus (Puerto Rico): growth rate, age at onset of egg-laying, egg production and life span.. Journal of Parasitology. 47. 49–50.3 indexed citations
9.
Ritchie, L. S., et al.. (1957). The possible influence of pH and specific gravity on the formalin ether (406th MGL) technic in the concentration of fecal eggs and cysts of certain parasites.. American Journal of Tropical Medicine and Hygiene. 6(2). 375–376.1 indexed citations
10.
Huntér, George W., et al.. (1957). Intradermal tests and their usefulness in the field for the detection of schistosomiasis japonica, paragonimiasis and clonorchiasis.. Journal of Parasitology. 43.1 indexed citations
11.
Williams, J. E., et al.. (1955). Field-test of four molluscacides against Oncomelania nosophora in the terraced-hillside habitat.. Journal of Parasitology. 41. 26–27.6 indexed citations
12.
Williams, J. E., et al.. (1955). Applications of molluscacides against juvenile Oncomelania nosophora for repopulation control.. Journal of Parasitology. 41.1 indexed citations
13.
Ritchie, L. S., et al.. (1954). Persistence of egg-laying by Oncomelania nosophora females following isolation from males.. Journal of Parasitology. 40.1 indexed citations
14.
Fonseca, James R., et al.. (1953). Evaluation of field procedures related to molluscacidal applications.. Journal of Parasitology. 39.1 indexed citations
15.
Ritchie, L. S., et al.. (1952). A comparison of the zinc sulfate and the MGL (formalin-ether) technics. Journal of Parasitology. 38. 4216.10 indexed citations
16.
Wykoff, Dale E. & L. S. Ritchie. (1952). Efficiency of the formalin-ether concentration technic.. Journal of Parasitology. 33.5 indexed citations
17.
Ritchie, L. S., George W. Huntér, C. Pan, & M. Yokogawa. (1951). Skin-tests for paragonimiasis with antigen from adult worms of Paragonimus westermani.. Journal of Parasitology. 37.4 indexed citations
18.
Ritchie, L. S., et al.. (1951). An epidemiologic survey of Shizuoka Prefecture, Japan.. Journal of Parasitology. 37.1 indexed citations
19.
Ritchie, L. S., et al.. (1951). Observations on the laying and incubation of eggs of Oncomelania nosophora.. Journal of Parasitology. 37.1 indexed citations
20.
Huntér, George W., et al.. (1951). Operation Santobrite -a schistosome snail eradication program in Japan.. Journal of Parasitology. 37.2 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.