%0 Journal Article
%A I. D. Kan
%T Differentiability of the Minkowski $?(x)$-function. III
%J Sbornik. Mathematics
%D 2019
%P 1148-1178
%V 210
%N 8
%U http://geodesic.mathdoc.fr/item/SM_2019_210_8_a3/
%G en
%F SM_2019_210_8_a3