M Tolomeo, RA Gancitano, M Musso, F Porretto, R Perricone, V Abbadessa, and A Cajozzo. 1994. “Effects of R-Enantiomer (GR66234A) and L-Enantiomer (GR66235A) of Telupidine, a New Dihydropyridine Derivative, on Cell Lines Displaying the Multidrug Resistant Phenotype”. Haematologica 79 (4). Pavia, Italy, 328-33. https://doi.org/10.3324/%x.