Das, S. et al. 2016. Pachydermoperiostosis And An Eyelid Ptosis Associated With Spiky Keratoderma – An Unusual Presentation. Nepal Journal of Dermatology, Venereology & Leprology. 12, 1 (Jan. 2016), 48–52. DOI:https://doi.org/10.3126/njdvl.v12i1.10603.