Emanuel Kitzelmann Ute Schmid Inducing Constructor Systems from Example-Terms by Detecting Syntactical Regularities. 49-63 2007 174 Electr. Notes Theor. Comput. Sci. 1 http://dx.doi.org/10.1016/j.entcs.2006.11.015 db/journals/entcs/entcs174.html#KitzelmannS07