Text this: Effect of a circular tunnel in the foundation soil on the seismic response of dikes

  ______   __   __             __   __    _____   
 /_   _//  \ \\/ //   ____     \ \\/ //  /  ___|| 
   | ||     \ ` //   |    \\    \ ` //  | // __   
  _| ||      | ||    | [] ||     | ||   | \\_\ || 
 /__//       |_||    |  __//     |_||    \____//  
 `--`        `-`'    |_|`-`      `-`'     `---`   
                     `-`