00854nam0-22002651i-450-990001248620403321000124862FED01000124862(Aleph)000124862FED0100012486220000920d1989----km-y0itay50------baengCosmology in (2+1) dimensions, ciclic models, and deformations of m 2,1di Guillemin , VictorPrinceton [N.J.]Princeton University Press1989V.228 p.24 cmAnnals of mathematics studies121Guillemin,Victor<1937- >40563ITUNINARICAUNIMARCBK990001248620403321C-11-(1217459MA1MA1Cosmology in (2+1) dimensions, ciclic models, and deformations of m 2,1381731UNINAING01