Synthesis and antitumor activity of triazolium-bis(triazole)tetrachlororuthenate(III) and bistriazolium-triazolepenta-chlororuthenate(III) - Keppler, B K; Balzer, W; Seifried, V (Two representatives of a new class of inorganic antitumor agents, Arzneim Forsch/Drug Res, 1987)