@article{10_4064_aa155_1_11,
     author = {Katalin Gyarmati and Imre Z. Ruzsa},
     title = {A set of squares without arithmetic progressions},
     journal = {Acta Arithmetica},
     pages = {109--115},
     publisher = {mathdoc},
     volume = {155},
     number = {1},
     year = {2012},
     doi = {10.4064/aa155-1-11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa155-1-11/}
}