Fadhila Dhuha Oktiana, Budi Santoso, Rahmi Sulistyarini. The Meaning and Limitations of the Phrases “Valid” and “Appropriate” in Electronic Summons from the Perspec-tive of the Principle of Legal Certainty. J. Sci. Educ. [nternet]. 2026Jan.19 [cited 2026Oct.7];6(2):1374-80. vailable from: https://jse.rezkimedia.org/index.php/jse/article/view/734