@article{10_4064_aa_32_1_7_13,
     author = {L. Chawla and Ellen Torrance},
     title = {Three restricted product-sum partition functions},
     journal = {Acta Arithmetica},
     pages = {7--13},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {1977},
     doi = {10.4064/aa-32-1-7-13},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-32-1-7-13/}
}