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 _    _    __   __    ______     ___      _____   
| \  / ||  \ \\/ //  /_____//   / _ \\   /  ___|| 
|  \/  ||   \ ` //   `____ `   / //\ \\ | // __   
| .  . ||    | ||    /___//   |  ___  ||| \\_\ || 
|_|\/|_||    |_||    `__ `    |_||  |_|| \____//  
`-`  `-`     `-`'    /_//     `-`   `-`   `---`   
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Text this: Optical and luminescence properties of Pr<sup>3+</sup> in Gd<inf>2</inf>O<inf>3</inf>-CaO-SiO<inf>2</inf>-B<inf>2</inf>O<inf>3</inf> glasses