%0 Journal Article %T Weyl's theorem and tensor product for quasi class A_k operators %A S. Panayappan %A D. Sumathi %A N. Jayanthi %J Pure Mathematical Sciences %D 2012 %I %U http://www.m-hikari.com/pms/pms-2012/pms-1-4-2012/jayanthiPMS1-4-2012-2.pdf