On the cliquish, quasicontinuous and measurable selections
Matejdes Milan TUZDFMDG - Katedra matematiky a deskriptívnej geometrie
Mathematica Bohemica. Vol. 116, no. 2 (1991), p. 170-173
xcla - ČLÁNKY
http://dml.cz/bitstream/handle/10338.dmlcz/126135/MathBohem_116-1991-2_6.pdf