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ЛИТЕРАТУРА  1. Juh\'аsz I. Cardinal Functions in Topology.   \emph{Math. Math.  Сеntrе Тrасts}, Тrасts,  34. Amsterdam, 1971. 2. Наjnаl А., Juh\'аsz I. Оп hereditarily $\alpha$-sеpаrаblе and   $\alpha$-Liпdel\"of spaces. Annales Univ. Sci. Budapest, 11, 19б8, 115—124. 
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