@incollection{Klimczuk21,
author = {Andrzej Klimczuk},
title = {Introductory Chapter: Demographic Analysis},
booktitle = {Demographic Analysis},
publisher = {IntechOpen},
address = {Rijeka},
year = {2021},
editor = {Andrzej Klimczuk},
chapter = {1},
doi = {10.5772/intechopen.100503},
url = {https://doi.org/10.5772/intechopen.100503}
}