
Consider to use the Kerkis font, which is an extension of Bookman with math support and support for greek characters or the enhanced version available with the TeX Gyre Bonum font.

[Click on text example to enlarge] [PDF sample]
[LaTeX source of PDF sample]
\usepackage[T1]{fontenc}
\usepackage{bookman}
\normalfont
\itshape
\scshape
\bfseries
http://www.ctan.org/tex-archive/fonts/psfonts/psnfss-source/