@article{GDZPPN002351692, title = {On a Problem of Boone.}, journal = {Mathematica Scandinavica}, volume = {30}, year = {1972}, pages = {111-117}, language = {en}, url = {http://dml.mathdoc.fr/item/GDZPPN002351692} }
Sacerdote, George S. On a Problem of Boone.. Mathematica Scandinavica, Tome 30 (1972) pp. 111-117. http://gdmltest.u-ga.fr/item/GDZPPN002351692/