%0 Journal Article %T On the extension problem of pluricanonical forms %A Yujiro Kawamata %J Mathematics %D 1998 %I arXiv %X We review some recent development on the extension problem of pluricanonical forms from a divisor to the ambient space in [Si], [K5] and [N3] with simplified proofs. %U http://arxiv.org/abs/math/9809091v1