1) Cleanroom design guide
https://cleanroomtechnology.com/news/article_page/HVAC_cleanroom_design_calculation_explained/156934
2) WHO HVAC Guide -1
3) WHO HVAC Guide -2
4) WHO HVAC Guide -3
https://gmpua.com/CleanRoom/HVAC/Solid.pdf
5) WHO HVAC Guide -3
https://pbe-expert.com/wp-content/uploads/2018/04/WHO_HVAC_QAS15-639_31082015.pdf
6) HVAC DESIGN
https://www.usbr.gov/tsc/techreferences/mands/mands-pdfs/HVACManl.pdf
