physica status solidi (b)
physica status solidi (b) > 247 > 6 > 1453 - 1456
physica status solidi (b) > 247 > 6 > 1517 - 1520
physica status solidi (b) > 247 > 6 > 1476 - 1479
physica status solidi (b) > 247 > 9 > 2185 - 2189
physica status solidi (b) > 247 > 9 > 2195 - 2201