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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 650–652, May, 1977.
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Belikov, A.B., Terent'ev, P.B. & Borisova, L.N. Mass spectra of 2,3,4,5-tetrahydropyrimido[3,4-a]indoles. Chem Heterocycl Compd 13, 526–529 (1977). https://doi.org/10.1007/BF00473200
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DOI: https://doi.org/10.1007/BF00473200