@article{10_4153_CMB_2016_066_x,
     author = {Dobrowolski, Edward},
     title = {A {Note} on {Lawton's} {Theorem}},
     journal = {Canadian mathematical bulletin},
     pages = {484--489},
     year = {2017},
     volume = {60},
     number = {3},
     doi = {10.4153/CMB-2016-066-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2016-066-x/}
}