%0 Journal Article %T Iitaka conjecture $C_{n,m}$ in dimension six %A Caucher Birkar %J Mathematics %D 2008 %I arXiv %X We prove that the Iitaka conjecture $C_{n,m}$ for algebraic fibre spaces holds up to dimension 6, that is, when $n\le 6$. %U http://arxiv.org/abs/0806.4413v1