Energy gap for indirect transition, Eu-O, Lanthanoid

• P1314235-1
• P602301-1
• P608708-1
• P901183-2
• P1124821-5
• P1124821-6
• P50039758-6
• P50110855-7
• P50009612-4
• P50115066-4
• P50069227-7
• P50048601-4
• P50120228-4
• P50013666-7
• P50071248-7
• P50037107-6