Jeremiah Hendren February 19, 2021 Physics (Astro. & Grav.) Wormholes, Time Machines, and the Weak Energy Condition Jeremiah Hendren February 19, 2021 Physics (Astro. & Grav.) Morris, Michael S., Kip S. Thorne, and Ulvi YurtseverPhysical Review Letters 61, no. 13 (1988): 1446
