W. L. Harris

A parametric study of blade vortex interaction noise for two, three, and four-bladed model rotors at moderate tip speeds Theory and experiment

K. P. Leighton, W. L. Harris, 1984 .

A simplified Mach number scaling law for helicopter rotor noise

K. S. Aravamudan, W. L. Harris, Anthony J. T. Lee, 1978 .