Michael Eichberg Sebastian Kanthak Sven Kloppenburg Mira Mezini Tobias Schuh Incremental Confined Types Analysis. 81-96 2006 164 Electr. Notes Theor. Comput. Sci. 2 http://dx.doi.org/10.1016/j.entcs.2006.10.006 db/journals/entcs/entcs164.html#EichbergKKMS06