@article{M2AN_1990__24_1_103_0, author = {Quintela-Estevez, P.}, title = {Critical points in the energy of hyperelastic materials}, journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique}, pages = {103--132}, publisher = {AFCET - Gauthier-Villars}, address = {Paris}, volume = {24}, number = {1}, year = {1990}, mrnumber = {1034901}, zbl = {0692.73015}, language = {en}, url = {http://archive.numdam.org/item/M2AN_1990__24_1_103_0/} }