@article{DAN_1983_270_4_a5,
     author = {V. V. Tkachuk},
     title = {On cardinal invariants of {Suslin} number type},
     journal = {Doklady Akademii Nauk},
     pages = {795--798},
     publisher = {mathdoc},
     volume = {270},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1983_270_4_a5/}
}