A. I. Nachman's Preprint on Global Uniqueness for a 2-D Inverse Boundary Value Problem

The provided citation indicates a preprint titled 'A. I. Nachman, Global Uniqueness for a 2-D Inverse Boundary Value Problem' authored by A. I. Nachman. It was published in 1993 as part of the 'Preprint Series 19' by the Department of Mathematics at the University of Rochester, located in Rochester, New York, USA. Therefore, this citation refers to a preprint of an academic paper, not a complete book or dissertation.