@book{PPN593930428, title = {Calcul des variations Tome 4, Fascicule 1}, series = {GDML\_Books}, publisher = {Mallet-Bachelier}, year = {1861}, language = {fr}, url = {http://dml.mathdoc.fr/item/PPN593930428} }
Moigno, François Napoleon Marie. Calcul des variations Tome 4, Fascicule 1. GDML_Books (1861), http://gdmltest.u-ga.fr/item/PPN593930428/