KTB Tumorforschungsgesellschaft mbH
Patent: EP2123305 A1, 2009 ;

Subramanian, Shunkar; Smith, Chad M.; Tabatabai, Ali; Bryan, Clinton D.; Buettner, Brian; Hale, Steve; Wakefield, Cynthia A.; Benbrook, Doris M.; Berlin, K. Darrell
Phosphorus, Sulfur and Silicon and the Related Elements, 2005 , vol. 180, # 1 p. 67 - 77