2,2,2-Tribromoethyl 2-Chloro-4-t-butylphenyl Phosphorochloridate: A Convenient Phosphorylating Agent for the Synthesis of DNA-Fragments by the Phosphotriester Approach - Arentzen, R; Van Boeckel, C A A; Van Der Marel, G; Van Boom, J H (Synthesis, 1979)