D. Kramer

Antiproliferative properties of polyamine analogues: a structure-activity study.

Y. Feng, J. Vinson, R. Bergeron, 1994, Journal of medicinal chemistry.

The Structures of Tetramethylrhodamine Isothiocyanate Isomers: An N. M. R. Study

H. Klapper, F. Miller, D. Kramer, 1968 .