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

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Text this: Crystallization kinetic of Er<sup>3+</sup>-doped BiO<inf>1.5</inf>-GeO<inf>2</inf>-BO<inf>1.5</inf> glass-ceramic