https://www.lantbruksforskning.se/projektbanken/vaxtnaringskretslopp-till-uthallig-olproduktion/?search=&pub_year=&hide_finished=yes&category=&app_year=&page=5
Blog from the Environmental Engineering Research Group at SLU
https://www.lantbruksforskning.se/projektbanken/vaxtnaringskretslopp-till-uthallig-olproduktion/?search=&pub_year=&hide_finished=yes&category=&app_year=&page=5