@book{400391, title = {Differential and Integral Equations}, series = {GDML\_Books}, publisher = {Academia}, address = {Praha}, year = {1979}, mrnumber = {MR0542283}, zbl = {0417.45001}, language = {en}, url = {http://dml.mathdoc.fr/item/400391} }
Schwabik, Štefan; Tvrdý, Milan; Vejvoda, Otto. Differential and Integral Equations. GDML_Books (1979), http://gdmltest.u-ga.fr/item/400391/