Butera, John A.; Caufield, Craig E.; Graceffa, Russell F.; Greenfield, Alexander; Gundersen, Eric G.; Havran, Lisa Marie; Katz, Alan H.; Lennox, Joseph R.; Mayer, Scott C.; McDevitt, Robert E.
Patent: US6214877 B1, 2001 ;

Zikan; Semonsky
Collection of Czechoslovak Chemical Communications, 1959 , vol. 24, p. 1274,1276

Zikan; Semonsky
Collection of Czechoslovak Chemical Communications, 1959 , vol. 24, p. 1274,1276