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

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Text this: Ferroelectric glass-ceramics from the PbO-Bi2O 3-GeO2 system