References/Addendum
Falk, K., 1997: Techniques for Issuing Severe Thunderstorm and Tornado Warnings with the WSR–88D Doppler Radar, NOAA Technical Memorandum, SR–185.
Witt, A. & S. Nelson, 1991: The Use of Single–Doppler Radar for Estimating Maximum Hailstone Size. J. Meteor, 30, 425–431.