@article{JEMS_2017_19_6_a3,
     author = {Jacob Fox and J\'anos Pach and Adam Sheffer and Andrew Suk and Joshua Zahl},
     title = {A semi-algebraic version of {Zarankiewicz's} problem},
     journal = {Journal of the European Mathematical Society},
     pages = {1785--1810},
     publisher = {mathdoc},
     volume = {19},
     number = {6},
     year = {2017},
     doi = {10.4171/jems/705},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/705/}
}