https://wikispooks.com/wiki/Alexander_Litvinenko
What do these Russians have in common? Viktor Yushchenko, Nikolai Khokhlov, Wolfgang Salus, Lev Rebet, Georgi Markov, Alexander Litvinenko, Anna Politkovskaya, Yevgeny Limarev, Dmitry Kovtun, Yegor Galdar and Khattab. Is their poisoning a coincidence or a conspiracy?
http://coincidenceorconspiracy.blogspot.com/2007/03/erinys-uk-ltd-and-titon-international.html
Molecules of murder:criminal molecules and classic cases
http://books.google.ba/books?id=JAzKSP4NagQC