• Semi-empirical method for estimation of energy losses in a large-scale pipelineLaanearu, Janek; Annus, Ivar; Sergejeva, Monika; Koppel, TiitProcedia engineering2014 / p. 969-977 : ill https://doi.org/10.1016/j.proeng.2014.02.108 https://www.scopus.com/sourceid/18700156717 https://www.scopus.com/record/display.uri?eid=2-s2.0-84899671137&origin=inward&txGid=3062ffda109904e856b88a56b1fe4c08 https://www.webofscience.com/wos/woscc/full-record/WOS:000341500600108