Hocek, M., Holý, A., Votruba, I., Dvořáková, H. Cytostatic 6-arylpurine nucleosides III. Synthesis and structure-activity relationship study in cytostatic activity of 6-aryl-, 6-hetaryl- and 6-benzylpurine ribonucleosides. Collection of Czechoslovak Chemical Communications. 2001, 66(3), 483-499. ISSN 0010-0765.