Les dibenzopentalènes B. Pullman, A. Pullman, E. D. Bergmann, G. Berthier, E. Fischer, Y. Hirshberg and J. Pontis J. Chim. Phys., 49 (1952) 24-28 Published online: 29 May 2017 DOI: 10.1051/jcp/1952490024
