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@article{MAN_1985__270_182958, author = {Gerhard Str\"ohmer}, title = {About the {Morse} {Theory} for {Certain} {Variational} {Problems.}}, journal = {Mathematische Annalen}, pages = {275--284}, publisher = {mathdoc}, volume = {270}, year = {1985}, zbl = {0537.35006}, url = {http://geodesic.mathdoc.fr/item/MAN_1985__270_182958/} }
Gerhard Ströhmer. About the Morse Theory for Certain Variational Problems.. Mathematische Annalen, Tome 270 (1985), pp. 275-284. http://geodesic.mathdoc.fr/item/MAN_1985__270_182958/