@INPROCEEDINGS{1995-MO,
  author = {J. Modersitzki and G. Opfer},
  title = {{F}aber versus minimal polynomials on annular sectors},
  booktitle = {Comp. Methods and Function Theory},
  year = {1995},
  editor = {RM Ali and R Ruscheweyh and EB Saff},
  pages = {243-265},
}