Gagarine Yaikhom Murray Cole Stephen Gilmore Jane Hillston A Structural Approach for Modelling Performance of Systems Using Skeletons. 167-183 2007 190 Electr. Notes Theor. Comput. Sci. 3 http://dx.doi.org/10.1016/j.entcs.2007.07.010 db/journals/entcs/entcs190.html#YaikhomCGH07