@string{amai="Ann. Math. Artif. Intell."} @Article{Szeider05, author = {Stefan Szeider}, title = {Generalizations of matched {C}{N}{F} formulas}, journal = AMAI, volume = {43}, number = {1-4}, pages = {223-238}, year = {2005}, url = {https://www.ac.tuwien.ac.at/files/pub/Szeider05.pdf}, }