@article{h-cscca-94 
, author =  "D. Halperin" 
, title =   "On the complexity of a single cell in certain arrangements of surfaces related to motion planning" 
, journal = "Discrete Comput. Geom." 
, volume =  11 
, year =    1994 
, pages =   "1--34" 
, succeeds =    "h-cscca-91" 
, update =  "95.01 matousek" 
}