@article{JEP_2021__8__311_0, author = {Bj\"orklund, Michael and Fish, Alexander and Shkredov, Ilya D.}, title = {Sets of transfer times with small densities}, journal = {Journal de l{\textquoteright}\'Ecole polytechnique {\textemdash} Math\'ematiques}, pages = {311--329}, publisher = {Ecole polytechnique}, volume = {8}, year = {2021}, doi = {10.5802/jep.147}, mrnumber = {4218160}, zbl = {07315958}, language = {en}, url = {http://www.numdam.org/articles/10.5802/jep.147/} }