@article{bdh-abp-99 
, author =  "K.-F. B{\"o}hringer and B.R. Donald and D. Halperin" 
, title =   "On the Area Bisectors of a Polygon" 
, journal = "Discrete and Computational Geometry" 
, volume =  22 
, year =    1999 
, pages =   "269--285" 
}