@misc{tao,
 ISSN = {0003486X},
 URL = {https://terrytao.wordpress.com/category/teaching/254a-ergodic-theory/},
 author = {Terence Tao},
 title = {254A Ergodic Theory},
 urldate = {2024-01-01},
 year = {2008},
}
@MISC{801106,
    TITLE = {Closure of a topological group},
    AUTHOR = {Mariano Suarez-Alvarez},
    HOWPUBLISHED = {Mathematics Stack Exchange},
    URL = {https://math.stackexchange.com/q/801106},
}
@article{Furstenberg,
author = {Furstenberg, H.},
journal = {American journal of mathematics},
issn = {0002-9327},
number = {3},
keywords = {Continuous functions ; Eigenfunctions ; Equivalence relation ; Geometry ; Integers ; Mathematical functions ; Mathematics ; Myelinated nerve fibers ; Structure (category theory) ; Topological compactness ; Topological spaces ; Topological theorems ; Topology},
language = {eng},
pages = {477-515},
publisher = {Johns Hopkins Press},
volume = {85},
year = {1963},
title = {The Structure of Distal Flows},
}