ET. AL., Vanny Christianti,. Analysis Of Differences In Share Prices Before And In Covid-19 Pandemic Era(Case Studies In The Sub-Sector Of Telecommunications, Hotel And Tourism, Health, Bumn Finance, And Transportation Listed On The Indonesia Stock Exchange). Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 12, n. 11, p. 1065–1077, 2021. DOI: 10.17762/turcomat.v12i11.5997. Disponível em: https://www.turcomat.org/index.php/turkbilmat/article/view/5997. Acesso em: 14 oct. 2025.