• Intelligent system and equipment for greenhouses monitoringPenkov, IgorJournal of hygienic engineering and design2018 / p. 41-46 : ill http://www.jhed.mk/filemanager/JHED%20Vol.%2022/03.%20FPP/01.%20Full%20paper%20-%20Igor%20Penkov.pdf https://www.scopus.com/sourceid/21100781704 https://www.scopus.com/record/display.uri?eid=2-s2.0-85043596733&origin=inward&txGid=eb106432ff72835dbf851d7337737d37