  This are the notes of a course, given by the first author for the
Graduiertenkollegs (=graduate students) at the Ruhr-University Bochum, in
December 1997. These lectures pursued two main tasks:
  FIRST - to give a systematic and self-contained introduction to the Gromov
theory of pseudoholomorphic curves. This is done in Chapters I,II,III.
  SECOND - to explain our join results on envelopes of meromorphy of real
surfaces in complex two-dimensional manifolds. We do this in Chapter IV.
