Cole, K. D., and L. E. Wharton, 1971: Volumes of Tubes of Force Unit Flux in the geomagnetic field. Planet. Space Sci., 19, 521.
Prabhakara, C., V. V. Salomonson, B. J. Conrath, J. Steranka, and L. J. Allison, 1971: Nimbus III satellite observations of ozone associated with the easterly jet stream over India during the 1969 summer monsoon. J. Marine Biological Association of India, 14, 42-56.
Prabhakara, C., V. V. Salomonson, B. J. Conrath, J. Steranka, and L. J. Allison, 1971: Nimbus III IRIS ozone measurements over South East Asia during june and July 1969. J. Atmos. Sci., 28, 828-831.