@article{076446239,
title = "Low-frequency digital lock-in amplifier",
author = "Probst, P.A. and Collet, B.",
year = "1985",
journal = "Review of Scientific Instruments",
volume = "56",
number = "3",
pages = "466-470",
issn = "0034-6748",
url = "https://eurekamag.com/research/076/446/076446239.php"
}