[A] A. V. ARHANGELSKIĬ:
On R-factor mappings of spaces with countable base. Dokl. Akad. Nauk SSSR 287 (1986), 14-17.
MR 0834933
[HJ] J. HOFFMANN-JÖRGENSEN:
The theory of analytic spaces. Aarhus Various Publ. Series, no. 10, 1970.
MR 0409748
[M1] E. MICHAEL:
$\chi_0$-spaces. J. Math. Mech. 15 (1966), 983-1002.
MR 0206907
[V] V. S. VARADARAJAN:
Measures on topological spaces. Mat. Sbornik 55 (97) (1961), 35-100. Amer. Math. Soc. Transl. (2) 48 (1965), 161-228.
MR 0148838