@article{MO_2020_95_3_a1,
     author = {S. V. Dvoryaninov},
     title = {``A or {B''} and ``either {A} or {B''}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {8--13},
     publisher = {mathdoc},
     volume = {95},
     number = {3},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2020_95_3_a1/}
}