@article{bk-bl3ps-12
, author = {Sergey Bereg and Mikio Kano}
, title = {Balanced line for a 3-colored point set in the plane}
, journal = {Electr. J. Comb.}
, year = {2012}
, volume = {19}
, pages = {P33}
, url = {http://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i1p33}
}