Quantile Regression for General Spatial Panel Data Models with Fixed   Effects
  This paper considers the quantile regression model with both individual fixed effect and time period effect for general spatial panel data. Instrumental variable quantile regression estimators will be proposed. Asymptotic properties of the proposed estimators will be developed. Simulations are conducted to study the performance of the proposed method. We will illustrate our methodologies using a cigarettes demand data set. 
Xiaowen Dai, Zhen Yan, Maozai Tian, Manlai Tang
stat.ME