@misc{ pirsa_PIRSA:17110003,
doi = {},
url = {https://pirsa.org/17110003},
author = {Kempf, Achim},
keywords = {Cosmology},
language = {en},
title = {General Relativity for Cosmology - Lecture 19},
publisher = {Perimeter Institute},
year = {2017},
month = {nov},
note = {PIRSA:17110003 see, \url{https://pirsa.org}}
}