M Tolomeo, RA Gancitano, M Musso, F Porretto, R Perricone, V Abbadessa, A Cajozzo. Effects of R-enantiomer (GR66234A) and L-enantiomer (GR66235A) of telupidine, a new dihydropyridine derivative, on cell lines displaying the multidrug resistant phenotype. Haematologica 1994;79(4):328-333; https://doi.org/10.3324/%x.