http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Elliptic and parabolic Equantions with discontinuous Coefficients (3 527 40135 0)
ANTONINO MAUGERI, Dian K. Palagachev; Biên soạn: Lubomirra G. Softova