Miia Hermelin Joo Yeon Cho Kaisa Nyberg Multidimensional Extension of Matsui's Algorithm 2. 209-227 2009 FSE http://dx.doi.org/10.1007/978-3-642-03317-9_13 conf/fse/2009 db/conf/fse/fse2009.html#HermelinCN09