@article{AIHPC_1989__S6__73_0,
     author = {Attouch, H. and Wets, R. J.-B.},
     title = {Epigraphical analysis},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {73--100},
     publisher = {Gauthier-Villars},
     volume = {S6},
     year = {1989},
     mrnumber = {1019109},
     zbl = {0676.49003},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1989__S6__73_0/}
}