Evidence of a supermassive black hole in the galaxy NGC 1023 from the nuclear stellar dynamics by Bower, G, Green, R, Bender, R, Gebhardt, K, Lauer, T, Magorrian, J, Richstone, DO, Danks, A, Gull, T, Hutchings, J, Joseph, C, Kaiser, M, Weistrop, D, Woodgate, B, Nelson, C, Malumuth, E