physica status solidi (b)
physica status solidi (b) > 250 > 2 > 233 - 243
physica status solidi (b) > 250 > 3 > 634 - 637
physica status solidi (b) > 250 > 4 > 793 - 800
physica status solidi (b) > 250 > 4 > 858 - 863
physica status solidi (b) > 250 > 8 > 1644 - 1650
physica status solidi (b) > 250 > 11 > 2386 - 2393