+++Journal of Polymer Science

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Уважаемые коллеги, прошу помочь со статьями:
Synthesis and properties of soluble aromatic polyamides derived from 2,2′-bis(4-carboxyphenoxy)-9,9′-spirobifluorene
Shen-Chang Wu, Ching-Fong
Journal of Polymer Science Part A: Polymer Chemistry, Volume 41, Issue 8, pages 1160–1166, 15 April 2003

DOI:

http://dx.doi.org/10.1002/pola.10657

Synthesis and characterization of soluble polyimides derived from 2,2′-Bis(3,4-dicarboxyphenoxy)-9,9′-spirobifluorene dianhydride
D. Sahadeva Reddy, Ching-Fong Shu*,
Journal of Polymer Science Part A: Polymer Chemistry, Volume 40, Issue 2, pages 262–268, 15 January 2002

DOI:

http://dx.doi.org/10.1002/pola.10103

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Большое спасибо!