@article{IM2_2017_81_1_a3,
     author = {K. B. Sabitov},
     title = {On the theory of the {Frankl} problem for equations of mixed type},
     journal = {Izvestiya. Mathematics },
     pages = {99--136},
     publisher = {mathdoc},
     volume = {81},
     number = {1},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2017_81_1_a3/}
}