@article{106204, author = {Mihail G. Tkachenko}, title = {Sum theorems for the tightness and $\pi$-character in the class of compact spaces}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {024}, year = {1983}, pages = {51-62}, zbl = {0523.54003}, mrnumber = {703925}, language = {en}, url = {http://dml.mathdoc.fr/item/106204} }
Tkachenko, Mihail G. Sum theorems for the tightness and $\pi$-character in the class of compact spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 024 (1983) pp. 51-62. http://gdmltest.u-ga.fr/item/106204/
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