## Homology, Homotopy and Applications

Homology, Homotopy and Applications (HHA) is a fully refereed international journal dealing with homology and homotopy in algebra and topology and their applications to the mathematical sciences.

A homotopy {$2$}-groupoid from a fibrationVolume 1, Number 1 (1999)
Additivity of Euler characteristics in relative algebraic $K$-groupsVolume 7, Number 3 (2005)