Ranganathan S, Simpson KJ, Shaw DC, Nicholas KR (Mar 2000). "The whey acidic protein family: a new signature motif and three-dimensional structure by comparative modeling". J Mol Graph Model. 17 (2): 106–13, 134–6. doi:10.1016/S1093-3263(99)00023-6. PMID10680116.
Ranganathan S, Simpson KJ, Shaw DC, Nicholas KR (Mar 2000). "The whey acidic protein family: a new signature motif and three-dimensional structure by comparative modeling". J Mol Graph Model. 17 (2): 106–13, 134–6. doi:10.1016/S1093-3263(99)00023-6. PMID10680116.