Aceto, Luca, Willem Fokkink, Anna Ingólfsdóttir, and Bas Luttik. “A Finite Equational Base for CCS With Left Merge and Communication Merge”. BRICS Report Series 13, no. 6 (March 12, 2006). Accessed November 20, 2019. https://tidsskrift.dk/brics/article/view/21912.