@Article{JMS-49-2,
author = {},
title = { Preface},
journal = {Journal of Mathematical Study},
year = {2016},
volume = {49},
number = {2},
pages = {0--0},
abstract = {},
issn = {2617-8702},
doi = {https://doi.org/2016-JMS-10125},
url = {https://global-sci.com/article/87800/preface}
}