Title: The Shape of Time
Authors: Hawking, Stephen, 1942-2018
Publisher: Harvard University,
Year: 1999
Abstract: Colloquium: The Shape of Time, Sep. 27, 1999. -- Lecture I: Nuts, Bolts and Branes, Sep. 28, 1999. -- Lecture II: Finite but Unbounded, Oct. 5, 1999.