@article{DCG_1989__4_6_131063,
     author = {D.T. Lee and P.J. de Rezende and Y.F. Wu},
     title = {Rectilinear {Shortest} {Paths} in the {Presence} of {Rectangular} {Barriers.}},
     journal = {Discrete & computational geometry},
     pages = {41--54},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1989},
     zbl = {0655.05041},
     url = {http://geodesic.mathdoc.fr/item/DCG_1989__4_6_131063/}
}