On Factorisations of Matrices and Abelian Groups
  We establish correspondances between factorisations of finite abelian groups (direct factors, unitary factors, non isomorphic subgroup classes) and factorisations of integer matrices. We then study counting functions associated to these factorisations and find average orders. 
Johan Andersson (Stockholm University), Gautami Bhowmik (Universite de   Lille 1)