@article{10_37236_4656,
     author = {Mark Lewko},
     title = {An improved lower bound related to the {Furstenberg-S\'ark\"ozy} theorem},
     journal = {The electronic journal of combinatorics},
     year = {2015},
     volume = {22},
     number = {1},
     doi = {10.37236/4656},
     zbl = {1307.05219},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/4656/}
}