Evaluating the behaviour of axially loaded hollow concrete block masonry walls with small-size openings: Various opening positions and their influence on experimental results - Abrahem A. Ali Blash; B.H. Abu Bakar; Ufuoma Joseph Udi; Azhar Ayad Jaafar; Ilyani Akmar Abu Bakar; Nursyamsi Nursyamsi (Engineering Structures, 2024)