Zabašta, A., Juhna, T., Tihomirova, K., Rubulis, J., Ribickis, L. (2014) Latvian Practices for Protecting Water and Wastewater Infrastructure. In: Securing Water and Wastewater Systems. Vol.2. S.Hakim, R.Clark ed. New York; Dordrecht; London: Springer International Publishing, pp.315-342. ISBN 9783319010915. Book is available on

Mezule L. 2012 Significance of Nonculturable Escherichia Coli in Drinking Water: Experimental and Pilot Studies in Large Drinking Water Systems. LAP Lambert Academic Publishing, p. 180. ISBN: 9783848499731.

Tihomirova K.(2011) NOM Removal from Water and its Influence on the Drinking Water Quality: Natural organic matter removal from water and its influence on the water quality in distribution network. -LAP LAMBERT Academic Publishing. -ISBN: 978-3-8465-2340-7. -172 pages. Book is available on

Juhna T. Comprehensive Biotechnology, 2nd edition, 2nd Edition Edited By  Murray Moo-Young , Michael Butler, Colin Webb, Antonio Moreira, Bernard Grodzinski, Z F Cui    &  Spiros Agathos. ISBN: 978-0-444-53352-4