%0 Journal Article %A Cowling, V. F. %A King, J. P. %T Detection of Singular Points %J Canadian mathematical bulletin %D 1982 %P 496-497 %V 25 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1982-072-6/ %R 10.4153/CMB-1982-072-6 %F 10_4153_CMB_1982_072_6