Cyanobacterial natural transformation paper is cited by Nies F. et al. (2022) on mSphere.

A paper by Yoshihara S. et al., (2001) about study of identifying factors for natural transformation in cyanobacterium conducted at the beginning of this century is recently cited by Nies F. et al (2002) Natural Competence in the Filamentous, Heterocystous Cyanobacterium Chlorogloeopsis fritschii PCC6912 on mSphere.