@article{UZERU_2012_1_a7,
     author = {L. A. Haykazyan},
     title = {On functional symbol-free logic programs},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {43--48},
     publisher = {mathdoc},
     number = {1},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2012_1_a7/}
}