Text this: Responses of concrete-filled cold-formed square hollow and double-C steel stub columns under cyclic and repeated loadings

  _____    __   __   __   _      ___      ______  
 /  ___||  \ \\/ // | || | ||   / _ \\   /_   _// 
| // __     \ ` //  | '--' ||  | / \ ||  `-| |,-  
| \\_\ ||    | ||   | .--. ||  | \_/ ||    | ||   
 \____//     |_||   |_|| |_||   \___//     |_||   
  `---`      `-`'   `-`  `-`    `---`      `-`'