@Misc{zbMATH03263493,
Author = {Tr{\`e}ves, Fran{\c{c}}ois},
Title = {Linear partial differential equations with constant coefficients. {Existence}, approximation and regularity of solutions},
Year = {1966},
Language = {English},
HowPublished = {Mathematics and its {Applications}. 6. {New} {York} etc.: {Gordon} and {Breach} {Science} {Publishers}. {X}, 534 p. (1966).},
zbMATH = {3263493},
Zbl = {0164.40602}
}