G. B. Guseva , E. V. Antina , A. S. Semeikin , M. B. Berezin , A. I. V'yugin The Special Features of the Thermal Oxidation Destruction of Isomeric Dipyrrolilmethanes. Russian Journal of Physical Chemistry , Vol. 80. Suppl. 1 , p. S98–S101 , 01.2006