R. Diez-Antolinez, M. Hijosa-Valsero, A. Paniagua, X. Gomez, Very-high-gravity Fermentation of Non-supplemented Cheese Whey Permeate by Immobilized Kluyveromyces marxianus, Chemical Engineering Transactions. 49 (2016) 529-534. doi:10.3303/CET1649089.