Describir: Papers and statements presented at the ninth Ann Arbor conference

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