Préface.
Calcul des variations Tome 4, Fascicule 1, GDML_Books, (1861), p. IX / Harvested from
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@article{PPN593930428+DMDLOG_0003,
     title = {Pr\'eface.},
     booktitle = {Calcul des variations Tome 4, Fascicule 1},
     series = {GDML\_Books},
     publisher = {Mallet-Bachelier},
     year = {1861},
     pages = {IX},
     url = {http://dml.mathdoc.fr/item/PPN593930428+DMDLOG_0003}
}

 (éd.). Préface., dans Calcul des variations Tome 4, Fascicule 1, GDML_Books,  (1861), p. IX. http://gdmltest.u-ga.fr/item/PPN593930428+DMDLOG_0003/