TY  - BOOK
TI  - Visibility algorithms in the plane 
SN  - 9780521875745 | 0521875749
PY  - 2007///
CY  - Cambridge
PB  - Cambridge University Press
UR  - http://www.loc.gov/catdir/toc/fy0713/2007297923.html | http://www.loc.gov/catdir/enhancements/fy0803/2007297923-b.html | http://www.loc.gov/catdir/enhancements/fy0803/2007297923-d.html
ER  -