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@article{VM_2003_5_1_a4, author = {D. Weise}, title = {The {Pythagorean} {Approach} to {Problems} of {Periodicity} in {Chemistry} and {Nuclear} {Physics}}, journal = {Visual Mathematics}, publisher = {mathdoc}, volume = {5}, number = {1}, year = {2003}, url = {http://geodesic.mathdoc.fr/item/VM_2003_5_1_a4/} }
D. Weise. The Pythagorean Approach to Problems of Periodicity in Chemistry and Nuclear Physics. Visual Mathematics, Tome 5 (2003) no. 1. http://geodesic.mathdoc.fr/item/VM_2003_5_1_a4/