TY  - BOOK
AU  - Essen,A.R.P.van den
AU  - Levelt,A.H.M.
TI  - Irregular singularities in several variables
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470406806 (online)
AV  - QA3QA372 .A57 no. 270
U1  - 510 s515.3/52 19
PY  - 1982///
CY  - Providence, R.I.
PB  - American Mathematical Society
KW  - Differential equations
KW  - Partial differential operators
KW  - Singularities (Mathematics)
N1  - Includes index; Bibliography: p. 42-43; 1. Introduction; 2. Statement of the theorem; 3. Preliminaries to the proof of Theorem 1; 4. Proof of the theorem; 5. Proof of the eigenvalue lemma; 6. Proof of the generalized splitting lemma; 7. Irregular singularities; the nilpotent case; 8. Appendix; Access is restricted to licensed institutions; Electronic reproduction; Providence, Rhode Island; American Mathematical Society; 2012
UR  - http://www.ams.org/memo/0270
UR  - http://dx.doi.org/10.1090/memo/0270
ER  -