found: Work cat.: 97-43726: Srivastava, S.M. A course on Borel sets, 1998:CIP introd. (Borel sets are precisely those analytic sets whose complements are also analytic)
found: Math. subj. classif.(04-XX, Set theory; 04A15, Descriptive set theory); also (54-XX, General topology; 54Hxx, Connections with other structures, applications; 54H05, Descriptive set theory (topological aspects of Borel ... sets))
found: Encyc. math.(Borel set, B-set, also called Borel-measurable sets and B-measurable sets)
found: Eisenreich. Mathematik(Borel set; Borelian set, Borel subset)