WHITE, Nicholas E., Angelini, Lorella The Discovery of a Second Luminous Low Mass X-ray Binary in the Globular Cluster M15 [online]. [Cit. 2009-07-31]. Dostupné online.
GERSSEN, Joris, van der Marel, Roeland P. Hubble Space Telescope Evidence for an Intermediate-Mass Black Hole in the Globular Cluster M15 II. Kinematical Analysis and Dynamical Modeling [online]. [Cit. 2009-07-31]. Dostupné online.
seds.org
FROMMERT, Hartmuth. Messier 15 [online]. [Cit. 2009-07-31]. Dostupné online.