Ali Mutlu and  Berrin Mutlu,  1−Skeleton Resolution of Free Simplicial Algebras with Given CW−Basis.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2011, vol. 55(7). 1050 - 1053
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/6262.