Seto H., Okuda T., Takesue T., Ikemura T. Reaction of Malonaldehyde with Nucleic Acid. I. Formation of Fluorescent Pyrimido[1,2-a]purin-10(3H)-one Nucleosides (англ.) // Bulletin of the Chemical Society of Japan[англ.] : journal. — 1983. — Vol. 56, no. 6. — P. 1799—1802. — doi:10.1246/bcsj.56.1799.
Seto H., Okuda T., Takesue T., Ikemura T. Reaction of Malonaldehyde with Nucleic Acid. I. Formation of Fluorescent Pyrimido[1,2-a]purin-10(3H)-one Nucleosides (англ.) // Bulletin of the Chemical Society of Japan[англ.] : journal. — 1983. — Vol. 56, no. 6. — P. 1799—1802. — doi:10.1246/bcsj.56.1799.