@Article{JPDE-23-389,
author = {Bowen HU  and Yunhua Ye },
title = {Logarithmic Gradient Estimates to Hessian-type Equations},
journal = {Journal of Partial Differential Equations},
year = {2010},
volume = {23},
number = {4},
pages = {389--400},
abstract = {<p>We study logarithmic gradient estimate to smooth admissible solutions of the Hessian-type equations on S^n. The equations contain a Monge-Ampère equation arising in designing a reflecting surface in geometric optics as a special case.</p>},
issn = {2079-732X},
doi = {https://doi.org/10.4208/jpde.v23.n4.6},
url = {http://global-sci.org/intro/article_detail/jpde/5241.html}
}