著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) SKELLAM J. G.,The formulation and interpretation of mathematical models of diffusional process in population biology,The Mathematical Theory of the Dynamic of Biological Populations,,Academic Press,1973,,,,https://cir.nii.ac.jp/crid/1572824500484402688,