[1] ARDIZZZONE L., AVERNA D.: Misurabilità delle funzioni astratte di più variabili. Atti Accad. Sci. Lett. Aгti Palermo, Ser. V Parte I, VI, 1985/86, 25-37.

[2] AVERNA D.: Separation properties in X and 2X. Upper semicontinuous and measurable multifunction. Rend. Circ. Mat. Palermo, to apper.

[3] DAVIS A. S.: Indexed systems of neighborhoods for general topological spaces. Amer. Mat Monthly, 68, 1961, 886-893. MR 0214017 | Zbl 0106.15504

[4] DRAVECKÝ J., NEUBRUN T.: Measurability of functions of two variables. Matematický Časopis, 23, 1973, 147-157. MR 0330398

[5] HALMOS P. R.: Measure theory. Van Nostrand, N. Y., 1950. MR 0033869 | Zbl 0040.16802

[6] HOU S. H.: Implicit function theorem in topological spaces. Appl. Analysis, 13, 1982, 209-217. MR 0663774

[7] MICHAEL E.: Topologies on spaces of subsets. Trans. Amer. Math. Soc., 71, 1951, 152-182. MR 0042109 | Zbl 0043.37902

[8] TOMA V.: On measurability of binary relations. Acta Math. Univ. Comenianae, 38, 1981, 53-61. MR 0643840 | Zbl 0484.28003

[9] WAGNER D. H.: Survey of measurable selection theorems. SIAM J. Control and Optimization, 15 n. 5, 1977, 859-903. MR 0486391 | Zbl 0407.28006