TY  - BOOK
AU  - Bjork,Jan-Erik
TI  - Rings of differential operators
SN  - 0444852921 :
U1  - 517.7 
PY  - 1979///
CY  - Amsterdam
PB  - North-Holland Pub.
KW  - Differential operators
KW  - Rings (Algebra)
KW  - Algebra
KW  - Equations
N1  - Includes bibliographical references and index
ER  -