@article{JGG_2011_15_2_JGG_2011_15_2_a5,
     author = {M. Manevich and E. Itskovich },
     title = {Light {Ray} {Trajectories} and {Projective} {Correspondences}},
     journal = {Journal for geometry and graphics},
     pages = {181--193},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/JGG_2011_15_2_JGG_2011_15_2_a5/}
}