Popivanov, P., Palagachev, D. The degenerate oblique derivative problem for elliptic and parabolic equations,
Akademie-Verlag Berlin, 1997, 157 p., 3-05-501757-9.
Popivanov, P., Palagachev, D. .
The degenerate oblique derivative problem for elliptic and parabolic equations.
Berlin: Akademie-Verlag Berlin, 1997, 157 p., 3-05-501757-9.
Popivanov, P., Palagachev, D. (1997)
The degenerate oblique derivative problem for elliptic and parabolic equations,
Berlin: Akademie-Verlag Berlin, 157 p., 3-05-501757-9
Popivanov, P., & Palagachev, D.
(1997).
The degenerate oblique derivative problem for elliptic and parabolic equations. Berlin: Akademie-Verlag Berlin, 157 p..