[1] J. Dugundji: Topology. Allyn Bacon, Boston 1976. MR 0478089

[2] J. Doboš: On discontinuity points of functions with closed graphs. (to appear).

[3] K. R. Gentry, H. B. Hoyle: C-continuous functions. The Yokohama Math. Ј. 18-21 (1970-1973), 72-76. MR 0282346 | Zbl 0217.48001

[4] R. V. Fuller: Relations among continuous and various non-continuous functions. Pac. Ј. Math. 25 (1968), 495-509. MR 0227952 | Zbl 0165.25304

[5] J. E. Joseph: Multifunctions and graphs. Pac. Ј. Math. 79 (1978), 509-529. MR 0531332 | Zbl 0405.54013

[6] K. Kuratowski A. Mostowski: Set theory with an introduction to Descгiptive Set Theory. Warszawa 1976. MR 0485384

[7] P. Kostyrko: A note on functions with closed graphs. Čas. Pěst. Mat. 94 (1969), 202-205. MR 0253304

[8] P. E. Long: Functions with closed graphs. Amer. Math. Monthly 76 (1969), 930-932. MR 1535590 | Zbl 0182.56002

[9] A. Lechicki: On continuous and measurable multifunctions. Аnn. Soc. Math. Pol. Ser. I. Сomm. Math. 21 (1979), 142-155. MR 0577679 | Zbl 0443.54014

[10] W. L. Strother: Сontinuous multivalued functions. Boll. da Soc. de Mat. Sao Paolo 10 (1958), 87-120. MR 0122961