Barut,Asim O Theory of group representations and applications / Asim o. Barut, Ryszand Raczka . - 2th revised ed. . - Singapore : World scientific, 1986 . - xiv-717 p. : couv. ill ; 23 cm. Bibliogr,index ISBN: 9789971502171 Source: don Universal Decimal Class. No.: 519.4.