Natural occurrence of 2′,5′-linked heteronucleotides in marine spongesLopp, Annika; Reintamm, Tõnu; Kuusksalu, Anne; Tammiste, Indrek; Pihlak, Arno; Kelve, MerikeMarine drugs2010 / 2, p. 235-254 Synthesis of 2',5'-linked nucleotides by OAS from marine spongesLopp, Annika; Reintamm, Tõnu; Kuusksalu, Anne; Tammiste, Indrek; Pihlak, Arno; Kelve, MerikeVIII World Sponge Conference : Ancient Animals, new Challenges : Girona (Spain), 20-24 September 2010 : book of abstracts2010 / p. 257