M.-O. Ebert, D. Ackermann, S. Pitsch, and B. Jaun, “NMR Study of the p-DNA Duplex [(4→?2’)-3’-Desoxyribopyranosyl-(ᵐ⁵CGDDTTᵐ⁵CG)₂] and Comparison with its p-RNA Analogue”, Chimia, vol. 55, no. 10, p. 852, Oct. 2001.