@article{DE_1970_6_7_a18,
     author = {M. V. Ivanovich},
     title = {Estimates of weak solutions in $C_{l+\alpha(r)}$ of systems that are elliptic in the sense of {Douglis} and {Nirenberg}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1302--1307},
     publisher = {mathdoc},
     volume = {6},
     number = {7},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_7_a18/}
}