@article{10_4153_S0008439521000011,
     author = {Martin, Greg and Parvardi, Amir},
     title = {Subproducts of small residue classes},
     journal = {Canadian mathematical bulletin},
     pages = {1--8},
     year = {2022},
     volume = {65},
     number = {1},
     doi = {10.4153/S0008439521000011},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439521000011/}
}