Apr 29 2020 Masaya Nishihata and Taisuke Otsu   Conditional GMM estimation for gravity models   Abstract  Contact Information  Citation  Full Text  -  Note   Apr 22 2015 Kazumitsu Nawata   Robust estimation based on the third-moment restriction of the error terms for the Box-Cox transformation model: An estimator consistent under heteroscedasticity   Abstract  Contact Information  Citation  Full Text  -  Note