Triebel, Hans. «Function spaces in lipschitz domains and on lipschitz manifolds. Characteristic functions as pointwise multipliers». Revista Matemática Complutense 15, no. 2 (enero 1, 2002): 475–524. Accedido julio 31, 2026. https://revistas.ucm.es/index.php/REMA/article/view/REMA0202220475A.