TY - BOOK AU - Guillemin,Victor TI - Cosmology in (2+1)- dimensions, cyclic models, and deformations of M2,1 SN - 0691085145 U1 - 514.82 PY - 1989/// CY - Princeton PB - Princeton University Press KW - MATHEMATICS KW - COSMOLOGY KW - DIFFERENTIAL KW - LORENTZ TRANSFORMATIONS ER -