LEPIK, Ülo. Haar wavelet method for solving stiff differential equations. Mathematical Modelling and Analysis, [S. l.], v. 14, n. 4, p. 467–481, 2009. DOI: 10.3846/1392-6292.2009.14.467-481. Disponível em: https://jbem.vilniustech.lt/index.php/MMA/article/view/6570. Acesso em: 27 aug. 2025.