%0 Journal Article
%A Williams, David
%T The Q-matrix problem
%J Séminaire de probabilités
%D 1976
%P 216-234
%V 10
%I Springer - Lecture Notes in Mathematics
%U https://www.numdam.org/item/SPS_1976__10__216_0/
%G en
%F SPS_1976__10__216_0