@article{10_4064_cm140_1_8,
     author = {Ernest X. W. Xia},
     title = {New infinite families of {Ramanujan-type} congruences modulo 9 for overpartition pairs},
     journal = {Colloquium Mathematicum},
     pages = {91--105},
     publisher = {mathdoc},
     volume = {140},
     number = {1},
     year = {2015},
     doi = {10.4064/cm140-1-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm140-1-8/}
}