%0 Journal Article %T Bounds of automorphism groups of genus 2 fibrations %A Zhi-Jie Chen %J Mathematics %D 1993 %I arXiv %X For a complex surface of general type with a relatively minimal genus 2 fibration, the bounds of the orders of the automorphism group of the fibration, of its abelian subgroups and of its cyclic subgroups are determined as linear functions of $c^2_1$. Most of them are the best. %U http://arxiv.org/abs/alg-geom/9301007v2