أرسل هذا في رسالة قصيرة: XANES and luminescence studies of M<inf>2</inf>O<inf>3</inf>-CaO-SiO<inf>2</inf>-B<inf>2</inf>O<inf>3</inf> (M<inf>2</inf>O<inf>3</inf> = Y<inf>2</inf>O<inf>3</inf> and La<inf>2</inf>O<inf>3</inf>) glasses doped with Dy<sup>3+</sup> ions

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