Content Provider
Directory of Open Access Journals: DOAJ Articles
8
Unknown
3
Springer Nature (via Crossref)
2
Biblioteca Digital de Periódicos da UFPR
1
Biblioteca Digital de Periódicos da UFPR (Universidade Federal do Paraná)
1
Canadian Science Publishing (via Crossref)
1
Defense Technical Information Center: DTIC Technical Reports database
1
IRIS Università degli Studi di Perugia
1
Inta Digital (ID - Instituto Nacional de Tecnología Agropecuaria)
1
LIU - Linköping University: Publications (DiVA)
1
ScienceDirect (Elsevier - via Crossref)
1
University of California: eScholarship
1
eCite UTAS (University of Tasmania)
1