Humphreys, James E. Representations of semisimple lie algebras in the BGG category O - Providence American Mathematical Society 2008 - xvi, 287p. Bibl. Index. - Graduate studies in Mathematics 94 . "Purchased under NBHM grant for the year 2009-2010" ISBN: 9780821846780 Dewey Class. No.: 513 / H927.RS