Second order equations with nonnegative characteristic form
Oleinik O A
Second order equations with nonnegative characteristic form Oleinik O A; Radkevic E V - New York American Mathematical Society 1973 - vii, 259p. cm.
22997
Textual
Boundary value problems
Differential equations
B334,7,2:7, L3
Second order equations with nonnegative characteristic form Oleinik O A; Radkevic E V - New York American Mathematical Society 1973 - vii, 259p. cm.
22997
Textual
Boundary value problems
Differential equations
B334,7,2:7, L3