TY - RPRT TI - A sterically expanded "constrained geometry catalyst" for highly active olefin polymerization and copolymerization: an unyielding comonomer effect. AU - Levi J Irwin AU - Joseph H Reibenspies AU - Stephen A Miller PY - 2004 DO - 10.1021/ja044678g UR - https://pubmed.ncbi.nlm.nih.gov/15612697/ ID - 15612697 ER -