@article{MZ_1977__157_172596,
     author = {Adrian Wadsworth and Daniel B. Shapiro},
     title = {On {Multiples} of {Round} and {Pister} {Forms.}},
     journal = {Mathematische Zeitschrift},
     pages = {53--62},
     publisher = {mathdoc},
     volume = {157},
     year = {1977},
     zbl = {0355.15022},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__157_172596/}
}