Database of non-canonical base pairs found in known RNA structures. - Uma Nagaswamy; Neil Voss; Zhengdong Zhang; George E. Fox (Nucleic Acids Res., 2000)

NCIR: a database of non-canonical interactions in known RNA structures. - Uma Nagaswamy; Maia Larios-Sanz; James Hury; Shakaala Collins; Zhengdong Zhang; Qin Zhao; George E. Fox (Nucleic Acids Res., 2002)