{{Cite journal| volume = 23| pages = 375–382| last1 = Luhering Giongo| first1 = J.| last2 = Lucas| first2 = F.| last3 = Casarin| first3 = F.| last4 = Heeb| first4 = P.A.| title = Brandelli keratinolytic proteases of Bacillus species isolated from Amazon basin showing remarkable de-hairing activity| journal = World J. Microbiol. Biotechnol.| date = 2007}}