Formation of a Unique End-to-End Stacked Pair of G-Quadruplexes in the hTERT Core Promoter with Implications for Inhibition of Telomerase by G-Quadruplex-Interactive LigandsSunMi L. Palumbo, Laurence H. Hurley, Scot Ebbinghaus|Journal of the American Chemical Society|2009Cited by 292