John G. Cramer's 2016 nonfiction book (Amazon gives it 5 stars) describing his transactional interpretation of quantum mechanics, The Quantum Handshake - Entanglement, Nonlocality, and Transactions, (Springer, January-2016) is available online as a hardcover or eBook at: http://www.springer.com/gp/book/9783319246406 or https://www.amazon.com/dp/3319246402.
SF Novels by John Cramer: Printed editions of John's hard SF novels Twistor and Einstein's Bridge are available from Amazon at https://www.amazon.com/Twistor-John-Cramer/dp/048680450X and https://www.amazon.com/EINSTEINS-BRIDGE-H-John-Cramer/dp/0380975106 . His new novel, Fermi's Question may be coming soon.
Alternate View Columns Online: Electronic reprints of 212 or more "The Alternate View" columns by John G. Cramer published in Analog between 1984 and the present are currently available online at: http://www.npl.washington.edu/av .
Planck 2018 Analysis:
"Planck 2018 Results VI. Cosmological Parameters", Aghanim, N., et al. (The Planck Collaboration); ArXiv:1807.06209 [astro-ph.CO] (2018).
for a Closed Universe:
"Planck evidence for a closed universe and a possible crisis for cosmology", , Alessandro Melchiorri, and Joseph Silk, Nature Astronomy (2019) doi:10.1038/s41550-019-0906-9; ArXiv:1911.02087 [astro-ph.CO] (2019).
Cosmic Coincidences - Dark Matter, Mankind, and Anthropic Cosmology, John Gribbin and Martin Rees, ReAnimus Press, Golden, CO (2015), ISBN-13: 978-1511915816.
"Early Dark Energy Can Resolve the Hubble Tension", Vivian Poulin, Tristan L. Smith, Tanvi Karwal, and Marc Kamionkowski, Phys. Rev. Lett. 122, 221301 (2019).