|
Differential equations without solutions
L. V. Hörmander
Citation:
L. V. Hörmander, “Differential equations without solutions”, Matematika, 5:5 (1961), 115–120; Math. Ann., 140 (1960), 169–173
Linking options:
https://www.mathnet.ru/eng/mat196 https://www.mathnet.ru/eng/mat/v5/i5/p115
|
|