TY  - BOOK
AU  - Doebner H D Ed.
AU  -  Palev T D Ed.
ED  - Bulgarian summer school on mathematical problems on quantum field theroy (1980 : Primorsko)
TI  - Proceeding on tuistor of geometry and non-linear systems
T2  - Lecture notes in mathematics; 970
U1  - CM65:(B)p5922,N80, M2 
PY  - 1982///
CY  - Berlin
PB  - Springer-Verlag         
KW  -  Geometry
KW  - Electormagnetic theory
ER  -