BOJARSKI, Bogdan; IHNATSYEVA, Lizaveta; JUHA KINNUNEN, JUHA KINNUNEN. How to Recognize Polynomials in Higher Order Sobolev Spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 112, n. 2, p. 161–181, 2013. DOI: 10.7146/math.scand.a-15239. Disponível em: https://tidsskrift.dk/math/article/view/15239. Acesso em: 14 aug. 2026.