Quasi-isometries and Amalgamations of Tame Combable Groups. - Stephen G. Brick (Int. J. Algebra Comput., 1995)

On Dehn Functions of Amalgamations and Strongly Undistorted Subgroups. - Stephen G. Brick; Jon M. Corson (Int. J. Algebra Comput., 2000)

A Quasi-Isometry Invariant Loop Shortening Property for Groups. - Stephen G. Brick; Jon M. Corson; Dohyoung Ryang (Int. J. Algebra Comput., 2008)