1. Applied data mining for business and industry;Giudici,2009
2. Heikkinen, M., Kolehmainen, M., & Hiltunen, Y. (2004). Classification of process phases using self-organizing maps and Sammon’s mapping for investigating activated sludge treatment plant in a pulp mill. In Proceedings of the Fourth European Symposium on Intelligent Technologies and their implementation on Smart Adaptive Systems (pp. 391–397).
3. Heikkinen, M., Heikkinen, T., & Hiltunen, Y. (2008). Process states and their submodels using self-organizing maps in an activated sludge treatment plant. In Proceedings of sims 2008, the 48th scandinavian conference on simulation and modelling.
4. A modelling and optimization system for fluidized bed power plants;Heikkinen;Expert Systems with Applications,2009
5. Self-organizing maps in the analysis of an industrial wastewater treatment process;Heikkinen;Mathematics and Computers in Simulation,2011