@article{Gasper:1972:ITT,
author = {Gasper, George},
title = {An inequality of {T}ur\'an type for {J}acobi polynomials},
journal = {Proc. Amer. Math. Soc.},
fjournal = {Proceedings of the American Mathematical Society},
volume = {32},
year = {1972},
pages = {435–439},
issn = {0002-9939},
mrclass = {33.40},
mrnumber = {MR0289826 (44 \#7013)},
mrreviewer = {A. E. Danese},
doi = {10.2307/2037835},
zblno = {0237.33009}}