Habiburrohman M, Oktaviani DR. Boundedness of Pseudo-Differential Operator for S0 Class. J. Nat. Scien. & Math. Res. [Internet]. 2020 Dec. 31 [cited 2025 Jul. 27];6(2):43-8. Available from: https://journal.walisongo.ac.id/index.php/JNSMR/article/view/11219