Anthony O. King, Nobuhisa Okukado and Ei-ichi Negishi «Highly general stereo-, regio-, and chemo-selective synthesis of terminal and internal conjugated enynes by the Pd-catalysed reaction of alkynylzinc reagents with alkenyl halides». Journal of the Chemical Society Chemical Communications, 1977, pàg. 683. DOI: 10.1039/C39770000683.