physica status solidi (b)
physica status solidi (b) > 253 > 5 > 883 - 888
physica status solidi (b) > 253 > 6 > 1149 - 1155
physica status solidi (b) > 253 > 10 > 1882 - 1889
physica status solidi (b) > 253 > 10 > 1960 - 1964
physica status solidi (b) > 253 > 11 > 2185 - 2196