@article{MOMA_1956__60_176993,
     author = {S. Parameswaran},
     title = {Number of {Recurring} {Cycles.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {183--189},
     publisher = {mathdoc},
     volume = {60},
     year = {1956},
     zbl = {0071.26906},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1956__60_176993/}
}