Text this: On Optimal Service Differentiation in Congested Network Markets

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