Traditional and Modern Methods in pH Control of an Ammonia Scrubber - A Simulation Study. - Jean-Peter Ylén; Pentti Jutila (EUROSIM, 1995)

Comparison of Practical Adaptive Algorithms in pH Control. - Terhi Ylöstalo; Heikki Hyötyniemi; Pentti Jutila; Jean-Peter Ylén (Eur. J. Control, 2001)

Dynamic simulation of product process. - Lasse T. T. Pesonen; Simo J. Salminen; Jean-Peter Ylén; Pasi Riihimäki (Simul. Model. Pract. Theory, 2008)