Zuhri AH, Soeharyadi Y, Widjaja J. On Conditions for Controllability and Local Regularity of A System of Differential Equations. JIMS [Internet]. 2023 Jul. 31 [cited 2025 Jan. 18];29(2):259-70. Available from: https://jims-a.org./index.php/jimsa/article/view/1584