@article{MZM_1985_37_3_a16,
     author = {V. V. Tkachuk},
     title = {Duality with respect to the functor~$C_p$ and cardinal invariants of the type of the {Souslin} number},
     journal = {Matemati\v{c}eskie zametki},
     pages = {441--451},
     publisher = {mathdoc},
     volume = {37},
     number = {3},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1985_37_3_a16/}
}