• On energy efficiency of water distribution systemVaabel, Joonas; Koppel, Tiit; Ainola, LeoWater Management Challenges in Global Change : proceedings of the 9th Computing and Control for the Water Industry (CCWI2007) and Sustainable Urban Water Management (SUWM2007) Conferences : Leicester, UK, 3-5 September, 20072007 / p. 169-172
• Use of pressure differentials for calibration of the operational water distribution systemVassiljev, Anatoli; Minguell Font, L.; Puust, RaidoWater Management Challenges in Global Change : proceedings of the 9th Computing and Control for the Water Industry (CCWI2007) and Sustainable Urban Water Management (SUWM2007) Conferences : Leicester, UK, 3-5 September, 20072007 / p. 205-209 https://www.researchgate.net/publication/290278958_Use_of_pressure_differentials_for_calibration_of_the_operational_water_distribution_system