@BOOK{publication1, title = "Elliptic Regularity Theory by Approximation Methods", author = "{PIMENTEL, Edgard}", year = "2022", publisher = "Cambridge University Press", abstract = " ", volume = "477", url = "https://www.cambridge.org/core/books/elliptic-regularity-theory-by-approximation-methods/3DCD6946CBF21DED3AAC0B46485E3064" }