@article{Kwiatkowski1992,
author = {Kwiatkowski, D. and Phillips, P.C. and Schmidt, P. and Shin, Y.},
title= {Testing the null hypothesis of stationarity against the alternative of a unit root: How sure are we that economic time series have a unit root?},
year = {1992},
doi = {10.1016/0304-4076(92)90104-Y},
volume = {54},
number = {1–3},
pages = {159--178},
}