@article{EXMA_2002__11_1_51083,
     author = {Sinclair, Robert and Tanaka, Minoru},
     title = {The set of poles of a two-sheeted hyperboloid.},
     journal = {Experimental mathematics},
     pages = {27--36},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2002},
     zbl = {1052.53002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2002__11_1_51083/}
}