Antonio Martínez Cegarra is a Spanish mathematician, who is in the Departamento de Álgebra of the Universidad de Granada, Spain. He has published extensively in homotopical and homological algebra, and non-abelian cohomology. A (partial) list of his publications is here.
M. Bullejos, A. M. Cegarra and J. Duskin, On cat -groups and homotopy types , J. Pure Appl. Alg., 86, (1993), 135 – 154.