ON A CLASS OF HIGHER ORDER DEGENERATE ELLIPTIC EQUATIONS

An algebra of pseudo‐differential operators

J. J. Kohn, Louis Nirenberg · Communications on Pure and Applied Mathematics · 1965 · 663 citations

Natural Sciences, Mathematics, Algebra +11

Non‐coercive boundary value problems

J. J. Kohn, Louis Nirenberg · Communications on Pure and Applied Mathematics · 1965 · 436 citations

Natural Sciences, Mathematics, Physics +12

Degenerate elliptic‐parabolic equations of second order

J. J. Kohn, Louis Nirenberg · Communications on Pure and Applied Mathematics · 1967 · 223 citations

Natural Sciences, Mathematics, Differential Equations +6

Another approach to elliptic boundary problems

Jaak Peetre · Communications on Pure and Applied Mathematics · 1961 · 172 citations

Natural Sciences, Physics, Computational Mechanics +11