Iranian Mathematical Society (IMS) Bulletin of the Iranian Mathematical Society 1017-060X 37 No. 4 2011 12 15 On a conjecture of a bound for the exponent of the Schur multiplier of a finite $p$-group235 242 en B. Mashayekhy A. Hokmabadi F. Mohammadzadeh 2009 03 31 Schur multiplier nilpotent multiplier exponent finite $p$-groups