@article{10_1017_S0017089500009642,
     author = {Horadam, K. J.},
     title = {Cohomological periodicity in graph products of combinatorially aspherical groups},
     journal = {Glasgow mathematical journal},
     pages = {123--129},
     year = {1993},
     volume = {35},
     number = {1},
     doi = {10.1017/S0017089500009642},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009642/}
}