CHMIELEWSKI, L.J.; KOSIŃSKI, W. Hierarchical pattern recognition method with the multi-level distance function. Engineering Transactions, [S. l.], v. 38, n. 2, p. 329–343, 1990. Disponível em: https://et3.ippt.pan.pl/index.php/et/article/view/3300. Acesso em: 24 apr. 2025.