BIBLIOGRAPHY CONTRIBUTOR Oskar Sheynin First name Oskar Last name Sheynin Bibliography entries by this contributor Sheynin, Oskar. 1992. “Al-Bīrūnī And The Mathematical Treatment Of Astronomical Observations”. Arabic Sciences And Philosophy 2: 199-228. Sheynin, Oskar. 1973. “Mathematical Treatment Of Astronomical Observations (A Historical Essay)”. Archive For History Of Exact Sciences 11: 97-126.