@article{VollmerMoellmann2019, author = {Michael Vollmer and Klaus-Peter M{\"o}llmann}, title = {Die Qual der Wahl an Weihnachten}, journal = {Physik in unserer Zeit}, volume = {49}, number = {6}, pages = {306 -- 306}, doi = {10.1002/piuz.201801528}, year = {2019}, }