Text this: An optimal PMU placement method against measurement loss and branch outage

 _    _    _    _    _____     _    _    _    _   
| || | || | || | || |  __ \\  | || | || | |  | || 
| || | || | || | || | |  \ || | || | || | |/\| || 
| \\_/ || | \\_/ || | |__/ || | \\_/ || |  /\  || 
 \____//   \____//  |_____//   \____//  |_// \_|| 
  `---`     `---`    -----`     `---`   `-`   `-`