1. M. LaBelle, The Doctoral Dissertation submitted to University of California, Riverside, 1981, pp. 1~169. (University Microfilms International, Ann Arbor, Michigan, U.S.A, No. 8122914).
2. G. Zubay, “Procedures on Nucleic Acid Research,” ed. by G. L. Cantoni and D. R. Davies, Harper and Row, Publishers, New York, 1966, pp. 455~460.
3. B. Tonomura, M. Kakitani and K. Hiromi, Abstracts of Papers, Annual Meeting of Agric. Chem. Soc. Japan, Sendai, March, 1983, p. 222.