Expansion of Green's function and regularity of Robin's function for elliptic operators in divergence form

Cao, D., & Wan, J. . (2024). Expansion of Green’s function and regularity of Robin’s function for elliptic operators in divergence form. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 18. https://doi.org/10.2422/2036-2145.202402_006