Xiao Yu Zheng Wang Geguang Pu Dingding Mao Jing Liu The Verification of rCOS Using Spin. 49-67 2008 207 Electr. Notes Theor. Comput. Sci. http://dx.doi.org/10.1016/j.entcs.2008.03.085 db/journals/entcs/entcs207.html#YuWPML08