Text this: Generalised eddington approximation for radiative transfer problems in spherically-symmetric moving media

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