Casimiro-Garcia, Agustin; De Clercq, Erik; Pannecouque, Christophe; Witvrouw, Myriam; Stup, Tracy L.; Turpin, Jim A.; Buckheit Jr., Robert W.; Cushman, Mark Bioorganic and Medicinal Chemistry, 2000, vol. 8, # 1 p. 191 - 200 doi: 10.1016/S0968-0896(99)00269-2