Traut, R. R.; Bollen, A; Sun, T. T.; Hershey, J. W.; Sundberg, J; Pierce, L. R. (1973). "Methyl 4-mercaptobutyrimidate as a cleavable cross-linking reagent and its application to the Escherichia coli 30S ribosome". Biochemistry. 12 (17): 3266–73. doi:10.1021/bi00741a019. PMID4581787.
Traut, R. R.; Bollen, A; Sun, T. T.; Hershey, J. W.; Sundberg, J; Pierce, L. R. (1973). "Methyl 4-mercaptobutyrimidate as a cleavable cross-linking reagent and its application to the Escherichia coli 30S ribosome". Biochemistry. 12 (17): 3266–73. doi:10.1021/bi00741a019. PMID4581787.