Text this: Materials Issues for Generation IV Systems : Status, Open Questions and Challenges

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