Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Nakajima Fumio,Predator-prey system model of singular equations; back to D'Ancona's question,Hokkaido University Preprint Series in Mathematics,,"Department of Mathematics, Hokkaido University",2004,635,,1-6,https://cir.nii.ac.jp/crid/1390853649725424768,https://doi.org/10.14943/83788