Text this: Theory of Sobolev multipliers : with applications to differential and integral operators

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