L. Lisuzzo, G. Cavallaro, S. Milioto, and G. Lazzara, “Halloysite nanotubes filled with salicylic acid and sodium diclofenac: effects of vacuum pumping on loading and release properties”, J. Nanostruct. Chem., vol. 11, no. 4 (December 2021), Feb. 2021, doi: 10.1007/s40097-021-00391-z.