@article{ZNSL_1988_167_a15,
     author = {N. M. Ivochkina},
     title = {Variational problems connected with operators of the {Monge--Amp\`ere} type},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {186--189},
     publisher = {mathdoc},
     volume = {167},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1988_167_a15/}
}