أرسل هذا في رسالة قصيرة: Fast and accurate computation of time-domain acoustic scattering problems with exact nonreflecting boundary conditions

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