GREGORY, JOHN; PERICAK-SPECTOR, KATHLEEN. A bliss-type multiplier rule for constrained PDE variational problems. Utilitas Mathematica , [S. l.], v. 56, 1999. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/134. Acesso em: 8 may. 2026.