1021/ja01365a033 Nuclear syntheses in the olefin series II. 1,4-diolefins Bernard H. Shoemaker and Cecil E. Boord J. Am. Chem. Soc.; 1931; 53(4) pp 1505
Robert G. Kelso, Kenneth W. Greenlee, John M. Derfer, Cecil E. Boord. The Synthesis and Properties of 1,1,2-Trimethylcyclopropane 1. Journal of the American