F. S. Zeitouni, G. M. El-Subruiti, G. O. Younes, and M. F. Amira, “Studies on ion-pairing effects of the kinetics of aquation of bromopentaammine cobalt(III) complex in malonate media”, Eur. J. Chem., vol. 2, no. 4, pp. 489–494, Dec. 2011.