Trefka, Robert Dale. "The Configuration of the Two Geometric Isomers of 3-Chlorocyclobutanecarboxylic Acid," May 1, 1961
1961
http://atom.grinnell.edu/trefka-robert-dale-the-configuration-of-the-two-geometric-isomers-of-3-chlorocyclobutanecarboxylic-acid-may-1-1961
73.61 H75 Ct