@article{ZNSL_1980_102_a5,
     author = {S. G. Mikhlin},
     title = {On the stability of solutions of unilateral variational problems with application to the plasticity theory},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {68--101},
     publisher = {mathdoc},
     volume = {102},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_102_a5/}
}