Restoration of unimodular functions from their holomorphic projections Richard Rochberg 47B35unimodular reconstructionbergman spacehardy spacedirichlet space Indiana University Mathematics Journal 1999 text pdf 10.1512/iumj.1999.48.1698 10.1512/iumj.1999.48.1698 en Indiana Univ. Math. J. 48 (1999) 567 - 592 state-of-the-art mathematics http://iumj.org/access/