1. Bates, R. H. T., Gough, P. T. and Napier, P. J.: 1973,Astron. Astrophys. 22, 319?320.
2. Beletic, J. W., Zadnik, J. A., Tritsch, C. L. and DuVarney, R.C.: 1992, in : High-Resolution Imaging by Interferometry, Proc. ESO Conf. and Workshop #39.
3. Black, D.C.: 1980, In Search of Other Planetary Systems,Space Science Reviews 25, 35?81.
4. Colucci, D.: 1992,SPIE Proc. 1688, 527?535.
5. Fried, D.L.: 1965,JOSA 55, No.11, 1427?1435.