@misc{calteches233,
          number = {9},
       publisher = {California Institute of Technology},
            year = {1963},
           title = {Engineering and Science, Volume 26:9, June 1963},
          editor = {Edward Hutchings, Jr.},
         address = {Pasadena, CA},
          volume = {26},
           month = {June},
         journal = {Engineering and Science},
             url = {https://resolver.caltech.edu/CaltechES:26.9.0}
}