@book{702166, title = {Differential Equations and Their Applications}, series = {GDML\_Books}, publisher = {Publishing House of the Czechoslovak Academy of Sciences}, address = {Prague}, year = {1963}, mrnumber = {MR0167666}, zbl = {0128.00303}, url = {http://dml.mathdoc.fr/item/702166} }
(éd.). Differential Equations and Their Applications. GDML_Books (1963), http://gdmltest.u-ga.fr/item/702166/