@Article{JMS-51-4,
author = {},
title = {Preface},
journal = {Journal of Mathematical Study},
year = {2018},
volume = {51},
number = {4},
pages = {0--0},
abstract = {},
issn = {2617-8702},
doi = {https://doi.org/2018-JMS-12914},
url = {https://global-sci.com/article/87757/preface}
}