@article{RCM_1987__21_1_181782,
     author = {Victor S. Albis-Gonzalez},
     title = {On {A} {Theorem} {Of} {M\"obius:} {Elementary} {Variations} {On} {The} {Polynomial} {Tonality.}},
     journal = {Revista colombiana de matematicas},
     pages = {85--94},
     year = {1987},
     volume = {21},
     number = {1},
     zbl = {0658.12009},
     url = {http://geodesic.mathdoc.fr/item/RCM_1987__21_1_181782/}
}