@article{MAIS_2018_25_5_a5,
     author = {S. M. Dudakov},
     title = {On safety of unary and non-unary {IFP-operators}},
     journal = {Modelirovanie i analiz informacionnyh sistem},
     pages = {525--533},
     year = {2018},
     volume = {25},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAIS_2018_25_5_a5/}
}