Batsanov, A., Perepichka, I., Bryce, M., & Howard, J. (2001). Cocrystals of 2-(2,4,5,7-tetranitrofluoren-9- ylidene)propanedinitrile and 2,4,5,7-tetranitrofluoren-9-one with chlorobenzene. Acta crystallographica. Section C, Crystal structure communications, 57, 1299-1302