Template:Nayaka et al., 2013a
- Nayaka, S., Upreti, D.K., Ponmurugan, P. & Ayyappadasan, G. 2013. Two new species of saxicolous Pyxine with yellow medulla from southern India. The Lichenologist 45(1): 3–8. DOI: 10.1017/S0024282912000618 . ResearchGate .