... After about thirty seconds Collection Czechoslovak Chern. Cornrnun. [Vol. 47J [1982J Page 10. ... Soc. 96, 5671 (1974). 16. Wagner HU, Gomper R. in the book: The Chemistry of the Quinonoid Compounds (S. Patai; Ed.), Vol. 2, p. 1145. Wiley-Interscience, New York 1974. 17. ...