@article{1181073045,
author = {Freedman, H.I.},
title = {G. J. Butler's research in mathematical biology},
journal = {Rocky Mountain J. Math.},
volume = {20},
number = {4},
year = {1990},
pages = { 839-845},
language = {en},
url = {http://dml.mathdoc.fr/item/1181073045}
}
Freedman, H.I. G. J. Butler's research in mathematical biology. Rocky Mountain J. Math., Tome 20 (1990) no. 4, pp. 839-845. http://gdmltest.u-ga.fr/item/1181073045/