@article{10_4064_aa_50_3_215_219,
     author = {R. Baker},
     title = {Square-free points on ellipsoids},
     journal = {Acta Arithmetica},
     pages = {215--219},
     publisher = {mathdoc},
     volume = {50},
     number = {3},
     year = {1988},
     doi = {10.4064/aa-50-3-215-219},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-50-3-215-219/}
}