It was proposed by N. Levinson in 1947.
See also: split Levinson recursion[?], Linear prediction
... 32.6% from 25 to 44, 31.2% from 45 to 64, and 9.4% who are 65 years of age or older. The median age is 42 years. For every 100 females there are 126.2 males. For every ...