Antypko II. A theorem of the Phragmén-Lindelöf type for solutions of an evolution equation of the second order with respect to time variable. Ukr. Mat. Zhurn. [Internet]. 1998May25 [cited 2024May19];50(5):724–731. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4910