TY  - BOOK
AU  - Tichonov, A. N.
TI  - Ill-posed problems in the natural sciences
T2  - Advances in science and technology in the USSR
PY  - 1987///
CY  - M.
PB  - Mir
KW  - Москва
KW  - Б.с21
KW  - rubbk
N2  - Библиогр. в конце глав
ER  -