@incollection{MSMF_1979__60__57_0,
     author = {Hiriart-Urruty, J-B.},
     title = {New concepts in nondifferentiable programming},
     booktitle = {Analyse non convexe (Pau, 1977)},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {57--85},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {60},
     year = {1979},
     doi = {10.24033/msmf.261},
     mrnumber = {81a:90138},
     zbl = {0469.90071},
     url = {http://archive.numdam.org/articles/10.24033/msmf.261/}
}