Synthesis and isomerization cyclization of polycyano-ureas containing imide units von Barashkov, N.N., Yevstaf'ev, V.P., Teleshov, E.N., Pravednikov, A.N.

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Azole analogues of polypyromellitimides von Yevstaf'ev, V.P., Braz, G.I., Yakubovich(dec.), A.Ya, Shalygin, G.F.

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Correlations between the properties and structures of some polyhetero-arylenes von Yevstaf'ev, V.P., Yakubovich, V.S., Shalygin, G.F., Selikhova, V.I., Zubov, Yu.A., Braz, G.I., Yakubovich, A.Ya

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