Concise encyclopedia of environmental systems : Edited by P. C. Young. Pergamon Press, Oxford (1993) ISBN 0-08-036198-6. - Gerrit van Straten; Karel J. Keesman (Autom., 1996)

Modelling and control of an N-removing activated sludge process. - Karel J. Keesman; L. J. S. Lukasse; Gerrit van Straten (ECC, 1999)

From bounded-noise data to robust PI-controller design. - Luc Steinbuch; Karel J. Keesman (ECC, 1999)

Optimal input design for low-dimensional systems: An Haldane kinetics example. - Karel J. Keesman; Johannes D. Stigter (ECC, 2003)

On adaptive optimal input design. - Johannes D. Stigter; Dirk Vries; Karel J. Keesman (ECC, 2003)

Optimal parametric sensitivity control of a fed-batch reactor. - Johannes D. Stigter; Karel J. Keesman (Autom., 2004)

On feedback identification of unknown characteristics: a bioreactor case study. - Karel J. Keesman; Vyacheslav I. Maksimov (Int. J. Control, 2008)

Modelling and controller design for distributed parameter systems via residence time distribution. - Simon van Mourik; Hans Zwart; Karel J. Keesman (Int. J. Control, 2009)

Modelling and Controller Design for a UV Disinfection Plant. - Simon van Mourik; Bernard J. Geurts; Hans Zwart; Karel J. Keesman (Eur. J. Control, 2010)

Switching Control for a Class of Non-Linear Systems with an Application to Post-Harvest Food Storage. - Hans Zwart; Karel J. Keesman; Simon van Mourik (Eur. J. Control, 2010)

Luenberger boundary observer synthesis for Sturm-Liouville systems. - Dirk Vries; Karel J. Keesman; Hans Zwart (Int. J. Control, 2010)

A system identification approach for developing and parameterising an agroforestry system model under constrained availability of data. - Karel J. Keesman; Anil Graves; Wopke van der Werf; Paul J. Burgess; João Palma; Christian Dupraz; Herman Van Keulen (Environ. Model. Softw., 2011)

Set-membership approach for identification of parameter and prediction uncertainty in power-law relationships: The case of sediment yield. - Karel J. Keesman; John P. Norton; Barry F. W. Croke; Lachlan T. H. Newham; Anthony J. Jakeman (Environ. Model. Softw., 2013)

Optimal input design for model discrimination using Pontryagin's maximum principle: Application to kinetic model structures. - Karel J. Keesman; Eric Walter (Autom., 2014)

Modelling ventilated bulk storage of agromaterials: A review. - Nik L. M. Grubben; Karel J. Keesman (Comput. Electron. Agric., 2015)

Energy and nutrient recovery for municipal wastewater treatment: How to design a feasible plant layout? - Rungnapha Khiewwijit; Hardy Temmink; Huub Rijnaarts; Karel J. Keesman (Environ. Model. Softw., 2015)

Set-membership estimation from poor quality data sets: Modelling ammonia volatilisation in flooded rice systems. - Khairudin Nurulhuda; Paul C. Struik; Karel J. Keesman (Environ. Model. Softw., 2017)

Controllability and observability of 2D thermal flow in bulk storage facilities using sensitivity fields. - Nik L. M. Grubben; Karel J. Keesman (Int. J. Control, 2018)

A spatially distributed physical model for dynamic simulation of ventilated agro-material in bulk storage facilities. - Nik L. M. Grubben; Karel J. Keesman (Comput. Electron. Agric., 2019)

Introductory overview of identifiability analysis: A guide to evaluating whether you have the right type of data for your modeling purpose. - Joseph H. A. Guillaume; John D. Jakeman; Stefano Marsili-Libelli; Michael Asher; Philip Brunner; Barry F. W. Croke; Mary C. Hill; Anthony J. Jakeman; Karel J. Keesman; Saman Razavi; Johannes D. Stigter (Environ. Model. Softw., 2019)

Equifinality in the modelling of ammonia volatilisation from a flooded rice system. - Khairudin Nurulhuda; Mohamad Pauzi Zakaria; Paul C. Struik; Karel J. Keesman (Environ. Model. Softw., 2020)

Set-membership parameter estimation based on Voronoi vertices. - Daniel Reyes-Lastiri; Hans J. Cappon; Karel J. Keesman (Environ. Model. Softw., 2021)

ORYZA (v3) rice crop growth modeling for MR269 under nitrogen treatments: Assessment of cross-validation on parameter variability. - Khairudin Nurulhuda; Farrah Melissa Muharam; Nurul Aina Najwa Shahar; Muhamad Faiz Che Hashim; Mohd Razi Ismail; Karel J. Keesman; Zed Zulkafli (Comput. Electron. Agric., 2022)

Sensor data fusion in electrochemical applications: An overview and its application to electrochlorination monitoring. - E. A. Ross; R. Martijn Wagterveld; Johannes D. Stigter; M. J. J. Mayer; Karel J. Keesman (Comput. Chem. Eng., 2023)

Exploiting structural observability and graph colorability for optimal sensor placement in water distribution networks. - Jarne J. H. Van Gemert; Valentina Breschi; Doekle R. Yntema; Karel J. Keesman; Mircea Lazar (CoRR, 2024)