@Article{zbMATH03233129,
Author = {M. I. {Vishik}},
Title = {{Quasi-linear strongly elliptic systems of differential equations in divergence form}},
FJournal = {{Transactions of the Moscow Mathematical Society}},
Journal = {{Trans. Mosc. Math. Soc.}},
ISSN = {0077-1554; 1547-738X/e},
Volume = {12},
Pages = {140--208},
Year = {1963},
Publisher = {American Mathematical Society (AMS), Providence, RI},
Language = {English},
Zbl = {0144.36201}
}