1.
Mykhaylyuk VV, Krasikova IV, Popov MM. Operators defined on $L_1$ which "nowhere" attain their norm. MFAT [Internet]. 2010 Mar. 25 [cited 2025 Dec. 16];16(1):17-2. Available from: https://zen.imath.kiev.ua/index.php/mfat/article/view/436