@article{VUU_2009_4_a14,
     author = {Yu. M. Smetanin},
     title = {Orthogonal basic of syllogistics},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {155--166},
     publisher = {mathdoc},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2009_4_a14/}
}