The limit distribution of the least squares estimator $\hat{\alpha}$ of the parameter $\alpha$ of the first order stochastic difference equation, in the boundary case $|\alpha| = 1$, is presented. With this, the asymptotic distributional problem for any real $\alpha$ in the first order case is completely settled.
@article{1176344077,
author = {Rao, M. M.},
title = {Asymptotic Distribution of an Estimator of the Boundary Parameter of an Unstable Process},
journal = {Ann. Statist.},
volume = {6},
number = {1},
year = {1978},
pages = { 185-190},
language = {en},
url = {http://dml.mathdoc.fr/item/1176344077}
}
Rao, M. M. Asymptotic Distribution of an Estimator of the Boundary Parameter of an Unstable Process. Ann. Statist., Tome 6 (1978) no. 1, pp. 185-190. http://gdmltest.u-ga.fr/item/1176344077/