Guanine-rich oligonucleotide with 5'-GC end form G-quadruplex with A(GGGG)A hexad, GCGC- and G-quartets and two symmetric GG and AA base pairs - Pavc, D.; Wang, B.; Spindler, L.; Drevensek-Olenik, I.; Plavec, J.; Sket, P. (Biological Magnetic Resonance Bank, 2020)