This map shows the geographic impact of P. Nicholas'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 P. Nicholas with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. Nicholas more than expected).
This network shows the impact of papers produced by P. Nicholas. 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 P. Nicholas. The network helps show where P. Nicholas may publish in the future.
Co-authorship network of co-authors of P. Nicholas
This figure shows the co-authorship network connecting the top 25 collaborators of P. Nicholas.
A scholar is included among the top collaborators of P. Nicholas 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 P. Nicholas. P. Nicholas is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Vaarst, Mette, Michael Walkenhorst, Silvia Ivemeyer, et al.. (2010). Farmer groups for animal health and welfare planning in European organic dairy herds. Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture). 683–691.9 indexed citations
8.
Vaarst, Mette, Christine Leeb, P. Nicholas, et al.. (2008). Development of animal health and welfare planning in organic dairy farming in Europe.. Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture). 40–43.4 indexed citations
Nicholas, P., Albert Sundrum, & Susanne Padel. (2007). Guidance notes to operators including recommendations in relation to nutrient supply. Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture).1 indexed citations
Nicholas, P., Ian Jeffreys, & Nicolas Lampkin. (2006). Effects of European organic farming policies at sectoral and societal levels. Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture).4 indexed citations
13.
Nicholas, P., et al.. (2004). Modelling Organic Dairy Production Systems. Organic Eprints (International Centre for Research in Organic Food Systems, and Research Institute of Organic Agriculture). 145–148.1 indexed citations
Macdonald, K.A., et al.. (2000). The effect of pasture silage quality on milk production and liveweight gain of dairy cows.. 60. 253–255.1 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.