Robert L. Vaught. On the Work of Andrzej Ehrenfeucht in Model Theory. In Jan Mycielski, Grzegorz Rozenberg, Arto Salomaa, editors, Structures in Logic and Computer Science, A Selection of Essays in Honor of Andrzej Ehrenfeucht. Volume 1261 of Lecture Notes in Computer Science, pages 1-13, Springer, 1997.
Abstract is missing.