@article{MZM_2013_94_6_a10,
     author = {A. D. Yashin and A. K. Koshcheeva},
     title = {New {Constants} in the {Superintuitionistic} {Logic~}$L2$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {918--932},
     publisher = {mathdoc},
     volume = {94},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_94_6_a10/}
}