Evaluation of the polymorphic forms of ritonavir and lopinavir in raw materials and co-milled systems - Pinheiro, Lucas Barboza Moreira; Tao, Songsheng; Culbertson, Elizabeth; Araujo, Gabriel Lima Barros de; Billinge, Simon J. L; Ferreira, Fabio Furlan (International Journal of Pharmaceutics, 2022)