@conference{model-of-autoc-funct,
  author = {Zabolotny, Wojciech Marek and Wollk-Laniewski, Przemyslaw
            and Fersten, Ewa and Luczywek, Elzbieta},
  title = "Modeling of the Autocorrelation Function - 
           a New Method for Estimation of Maximum Frequency in
           the Transcranial Doppler Signal",
  booktitle = "Proceedings of the XXI-st National Conference Circuit
               Theory and Electronic Networks",
  year = 1998,
  pages = "523--528"}