PLASCHINSKY, P. One functional operator inversion formula. Mathematical Modelling and Analysis, [S. l.], v. 6, n. 1, p. 138–146, 2001. DOI: 10.3846/13926292.2001.9637153. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9892. Acesso em: 9 may. 2025.