@article{DAN_1975_223_4_a6,
     author = {B. \`E. Shapirovskii},
     title = {On $\pi$-character and $\pi$-weight in compact {Hausdorff} spaces},
     journal = {Doklady Akademii Nauk},
     pages = {799--802},
     publisher = {mathdoc},
     volume = {223},
     number = {4},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_223_4_a6/}
}