@incollection {D:faps, title = {A Formal Approach to Problem Solving}, booktitle = {Computer Modeling of Scientific Reasoning}, year = {2003}, pages = {15{\textendash}26}, publisher = {Universidad Nacional Del Sur. EDIUNS}, address = {Bahia Blanca, Argentinia}, author = {Batens, Diderik}, editor = {Delrieux, Claudio and Legris, Javier} }