@article{paperid:201079,
author = {A.G. Miamee and Shahkar, GholamHossain},
title = {shift operator for periodically correlated processes},
journal = {Indian Journal of Pure and Applied Mathematics},
year = {2002},
month = {January},
issn = {0019-5588},
keywords = {Periodically correlated; Shift; Stationary; Linearly stationary; Bounded linearly 
stationary},
}