共 10 条
[2]
FIELDS EK, 1951, Patent No. 2579810
[3]
HOLY A, 1974, NUCLEIC ACIDS RES, V1, P289
[4]
MARKIEWICZ WT, 1979, J CHEM RES-S, P24
[10]
TANG JC, 1978, TETRAHEDRON LETT, P723