@conference{Yli-hietanen1999,
author = "Jari Yli-Hietanen and Konsta Koppinen and Katriina Halonen",
address = "Rhodes, Greece",
booktitle = "In proceedings of the European Signal Processing Conference",
month = "September",
pages = "1905-1907",
title = "{C}luster {F}ilter",
year = "1999",
}