@Article{JPDE-16-193,
author = {Zhiting Xu , Baoguo Jia  and Dongkui Ma },
title = {Integral Averaging Technique for Oscillation of Elliptic Equations of Second Order},
journal = {Journal of Partial Differential Equations},
year = {2003},
volume = {16},
number = {3},
pages = {193--203},
abstract = { The elliptic differential equations of second order \sum^n_{i,j=1}D_i[A_{ij}(x, y)D_jy] + P(x, y) + Q(x, y, ∇y) = e(x), x ∈ Ω . will be considered in an exterior domain Ω⊂ R^n, n ≥ 2. Some oscillation criteria are given by integral averaging technique.},
issn = {2079-732X},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/jpde/5418.html}
}