@conference{Klapuri2009-ISMIR,
author = "Anssi Klapuri",
address = "Kobe, Japan",
booktitle = "Proc. 10th Int. Society for Music Information Retrieval Conf. (ISMIR 2009)",
title = "{A} method for visualizing the pitch content of polyphonic music signals",
url = "https://www.cs.tut.fi/sgn/arg/klap/optimSals.pdf",
year = "2009",
}