@article{JRAM_1982__332_152435, author = {D.R. Heath-Brown}, title = {The least square-free number in an arithmetic progression.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {204--220}, publisher = {mathdoc}, volume = {332}, year = {1982}, zbl = {0493.10045}, url = {http://geodesic.mathdoc.fr/item/JRAM_1982__332_152435/} }