TY  - JOUR
AU  - Philip E.B. Jourdain
TI  - On those Principles of Mechanics which depend upon Processes of Variation
JO  - Mathematische Annalen
PY  - 1908
SP  - 513
EP  - 527
VL  - 65
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1908__65_158359/
ID  - MAN_1908__65_158359
ER  -