KHALID, S.; WU, S. Supporting Scholarly Search by Query Expansion and Citation Analysis. Engineering, Technology & Applied Science Research, Greece, v. 10, n. 4, p. 6102–6108, 2020. DOI: 10.48084/etasr.3655. Disponível em: https://etasr.com/index.php/ETASR/article/view/3655. Acesso em: 25 jan. 2022.