Banister, A., Lavender, I., Rawson, J., Clegg, W., Tanner, B., & Whitehead, R. (1993). Preparation And Characterization Of The Mixed 1,3,2,4-dithiadiazolylium/1,2,3,5-dithiadiazolylium Salts And Related Free-radicals - [m-snsnc-c6h4-cnssn]x And [p-snsnc-c6h4-cnssn]x (x = 2+, .+ Or 2.). Journal of the Chemical Society. Dalton transactions, 1421-1429