Yes, up to now we edited three volumes:
Studies in Quantitative Linguistics 1, Problems in Quantitative Linguitics 1
Studies in Quantitative Linguistics 4, Problems in Quantitative Linguitics 2
Studies in Quantitative Linguistics 12, Problems in Quantitative Linguitics 3
and the next one is in preparation:
Studies in Quantitative Linguistics 14, Problems in Quantitative Linguistics 4
Much pleasure in solving some of the problems!