1. Parrot beak nails revisited: case series and comprehensive review;Chen;Dermatol Ther (Heidelb).,2018
2. Parrot Beak nail: case report and review of parrot beak nail dystrophy;Forouzan;Cureus,2021
3. Nail involvement in systemic sclerosis;Marie;J Am Acad Dermatol.,2017
4. Nail changes in connective tissue diseases: do nail changes provide clues for the diagnosis?;Tunc;J Eur Acad Dermatol Venereol.,2007
5. Manifestaciones del aparato ungueal en las enfermedades del colágeno: reporte de 43 casos;Chang;Dermatol Cosmet Med y Quir.,2016