@article{Sacha_2017,
publisher = {{IOP} Publishing},
doi = {10.1088/1361-6633/aa8b38},
title = {Time crystals: a review},
url = {https://doi.org/10.1088%2F1361-6633%2Faa8b38},
journal = {Reports on Progress in Physics},
author = {Krzysztof Sacha and Jakub Zakrzewski},
month = {nov},
volume = {81},
year = {2017},
pages = {016401},
number = {1}
}