@misc{calteches651,
           month = {June},
         journal = {Engineering and Science},
          volume = {12},
         address = {Pasadena, CA},
          number = {9},
            year = {1949},
       publisher = {California Institute of Technology},
           title = {Engineering and Science, Volume 12:9, June 1949},
          editor = {Edward Hutchings, Jr.},
             url = {https://resolver.caltech.edu/CaltechES:12.9.0}
}