1. Bhadra, R. , Pal, P. , Roy, R. , and Dutta, A.K. (1994). Process for the preparation of an extract from human placenta containing glycosphingolipids and endothelin-like constituent peptides useful for the treatment of vitiligo. Indian patent appl. No. 1228/Del/94.
2. Bhadra, R. , Pal, P. , Roy, R. , and Dutta, A.K. (1997). Process for the preparation of an extract from human placenta containing glycosphingolipids and endothelin-like constituent peptides useful for the treatment of vitiligo. US patent no. 5690966 Nov.25.
3. Bhadra, R. , Pal, P. , Roy, R. , and Dutta, A.K. (1998). Process for the preparation of an extract from human placenta containing glycosphingolipids and endothelin-like constituent peptides useful for the treatment of vitiligo. European Union patent no. EP0839535.Dec6.
4. Mitf regulation of Dia1 controls melanoma proliferation and invasiveness;Carreira;Genes Dev.,2006