URSI/IAU Symposium on Radio Astronomical Seeing, Beijing, People's Republic of China, May 15-19, 1989, Proceedings. Beijing/Oxford, International Academic Publishers/Pergamon Press, 1990, p205-211
URSI/IAU Symposium on Radio Astronomical Seeing, Beijing, People's Republic of China, May 15-19, 1989, Proceedings. Beijing/Oxford, International Academic Publishers/Pergamon Press, 1990, p239-242