@book{PPN585192030, title = {A Treatise on Differential Equations Hauptbd.}, series = {GDML\_Books}, publisher = {Macmillan}, year = {1859}, language = {en}, url = {http://dml.mathdoc.fr/item/PPN585192030} }
Boole, George. A Treatise on Differential Equations Hauptbd.. GDML_Books (1859), http://gdmltest.u-ga.fr/item/PPN585192030/