@article{article,
title = {Time series analysis using a Fourier spectrum, an autocorrelogram and a power density spectrum},
author = {},
year = {1980},
journal = {Zeitschrift für die Gesamte Hygiene und ihre Grenzgebiete},
volume = {26},
number = {3},
pages = {208-212},
howpublished = "\url{https://eurekamag.com/research/044/813/044813607.php}"
}