%0 Journal Article %T Catalytic polymerization of ethylene by non-metallocene Zirconium(IV) calix[4] pyrrole complexes %A Mohebbi, Sajjad %A Rayati, Saeed %J Transition Metal Chemistry %V 32 %N 8 %P 1035-1038 %@ 0340-4285 %D 2007-08-20 %I Springer Netherlands %~ DeepDyve