an Entity references as follows:
Heinz P. Bohlen (26 June 1935 – 2 February 2016) was a microwave electronics and communications engineer. He designed and described numerous non-octave musical scales (alternative musical tunings and temperaments), many based on combination tones, including the Bohlen–Pierce scale in 1972 (independently discovered by John R. Pierce in 1984, also a microwave electronics and communications engineer, six years later and Kees van Prooijen in 1978), the A12 scale, and the 833 cents scale.