TY  - BOOK
AU  - Brink,Lars
AU  - Friedan,D.
AU  - Polykov,A.M.
TI  - Physics and mathematics of strings
SN  - 9971509806
PY  - 1990///
CY  - Singapore
PB  - World Scientific
KW  - Superstring theories
N1  - Includes bibliographical references
ER  -