Text this: Structures for anticausal inverses and application in multirate filter banks

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