Louise A. Dennis Mateja Jamnik Martin Pollet On the Comparison of Proof Planning Systems: lambdaCLAM, Omega and IsaPlanner. 93-110 2006 151 Electr. Notes Theor. Comput. Sci. 1 http://dx.doi.org/10.1016/j.entcs.2005.11.025 db/journals/entcs/entcs151.html#DennisJP06