Name Info Provider Link
free resource Elsevier Science https://linkinghub.elsevier.com/retrieve/pii/S0104-42302013000100010
free resource Scientific Electronic Library Online https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302013000100010&lng=en&nrm=iso&tlng=en
free resource scite Smart Citations https://scite.ai/reports/23440141