Operational Calculus for Two Commuting Closed Operators. J.T. Marti — 1968 Commentarii mathematici Helvetici
Numerical Computation of Least Constants for the Sobolev Inequality. J.T. Marti; M. Hegland — 1986 Numerische Mathematik
A Note on Bases in Ordered Locally Convex Spaces. J.T. Marti; D.R. Sherbert — 1970 Commentarii mathematici Helvetici