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 .
Lorentzian Wormholes, Matt Visser, AIP Press,
(1996). Woodbury, NY
"Some Thoughts on Energy Conditions and Wormholes", Thomas A. Roman, electronic preprint gr-qc/0409090,
September 23, 2004.
Wormholes and Rm
"Wormhole Throats in Rm Gravity", N. Furey and A. DeBenedictis, electronic preprint gr-qc/0410090088,
November 22, 2004.
Search for Negative Mass
J. G. Cramer, R. W. Forward, M. S. Morris, M. Visser, G. Benford, and G. A. Landis, Physical Review D51 3117-3120 (1995).