@article {4072,
	title = {Dual-Tone Multiple Frequency Detection and Estimation},
	year = {2004},
	month = {12/2004},
	institution = {University of Notre Dame},
	address = {Notre Dame, IN},
	issn = {EE-598D-Project-2-NK},
	attachments = {https://archive.isis.vanderbilt.edu/sites/default/files/2004-kott-dtmf-tr.zip},
	author = {Kottenstette, Nicholas}
}
