%0 Journal Article %A Karaliopoulou, Margarita %T On the number of word occurrences in a semi-Markov sequence of letters %J ESAIM: Probability and Statistics %D 2009 %P 328-342 %V 13 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ps:2008009/ %R 10.1051/ps:2008009 %G en %F PS_2009__13__328_0