@article{AM2_1978__18_136773,
     author = {P. Erd\"os and B. Richmond},
     title = {On partitions of {N} into summands coprime to {N.}},
     journal = {Aequationes mathematicae},
     pages = {178--186},
     publisher = {mathdoc},
     volume = {18},
     year = {1978},
     zbl = {0401.10057},
     url = {http://geodesic.mathdoc.fr/item/AM2_1978__18_136773/}
}