hi, i am a new beginner. i wanna know how can i input data from literature (research papers) into OpenLCA? do those flows like benzene, toluene etc (just for example) need to be already present in any database? for example, i am using ELCD for PET processes. if any of the flows is missing in the database and i need to add them in intermediate or final process, what can i do to add lietrature data instead?
