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Synthesis of 1,6-Carbazoledicarboxylic and 1,2,3,4-Tetracarbazole-1,6-dicarboxylic Acid Esters
N. V. Alekseeva, A. I. Bokanov, L. M. Alekseeva1 and L. I. Budanova
Pharmaceutical Chemistry Journal
Volume 37, Number 8 / August, 2003
421-424
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http://dx.doi.org/10.1023/A:1027308030186