[1] M. E. RUDIN: 
Lectures on set theoretic topology. Conf. ser. in Math, 23, Amer. Math. Soc, Providence, 1975. 
MR 0367886 | 
Zbl 0318.54001 
[2] A. B. AРХАНГЕЛЬСКИЙ: 
Cтроенийе и классификация топологицеских пространств и кардинальные инварианты. Уcпехи Матем. Наук 33, 6 (1978), 29-84. 
MR 0526012 | 
Zbl 0473.57022 
[3] D. B. ŠAHMATOV: 
No upper bound for cardinalities of Tychonoff ccc spaces with a $G_{\delta}$-diagonal exists. (An answer to J. Ginsburg and R. G. Woods question.) Comment. Math. Univ. Carolinae 25 (1984), 731-746. 
MR 0782022 
[4] J. GINSBURG R. G. WOODS: 
A cardinal inequality for topological spaces involving closed discrete sets. Proc. Amer. Math. Soc. 64 (1977), 357-360. 
MR 0461407 
[5] V. V. USPENSKIJ: 
A large $F_{\sigma}$-discrete Fréchet space having the Souslin property. Comment. Math. Univ. Carolinae 25 (1984), 257-260. 
MR 0768812