Popova L. V. (1992) “Trivial differential equations in spaces $L_p, 0 < p&lt; 1$”, Ukrains’kyi Matematychnyi Zhurnal, 44(9), pp. 1238-1242. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/8176 (Accessed: 24November2024).