Valentova, K., Frcek, J. a Ulrichova, J. (2001) „Yacon (Smallanthus sonchifolius) and Maca (Lepidium meyenii), Traditional Andean Crops as New Functional Foods on the European Market", Chemické listy, 95(10). Dostupné z: http://blog.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2375 (Viděno: 26 listopad 2024).