TY  - BOOK
AU  - Björk,Jan-Erik
TI  - Rings of differential operators
SN  - 0444852921
PY  - 1979///
CY  - Amsterdam, New York
PB  - North-Holland Pub. Co.
KW  - Differential operators
KW  - Rings (Algebra)
N1  - Includes bibliographies and index
ER  -