%0 Journal Article %A Ernest X. W. Xia %T New infinite families of Ramanujan-type congruences modulo 9 for overpartition pairs %J Colloquium Mathematicum %D 2015 %P 91-105 %V 140 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm140-1-8/ %R 10.4064/cm140-1-8 %G en %F 10_4064_cm140_1_8