@ARTICLE{VanSchagen2009ModelBasedPh,
author = {K.M. {van} Schagen and L.C. Rietveld and A.M.J. Veersma and R. Babu\v{s}ka},
title = {Model-based {pH} monitor for sensor assessment},
journal = {Water science and technology},
year = {2009},
volume = {60},
pages = {4709--715},
number = {3},
}