@book{UBHD-1036704, publisher={Springer}, address={Berlin}, year={1975}, pages={XVIII, 241 S.}, language={eng}, isbn={0-387-07120-2 and 3-540-07120-2 and 978-0-387-07120-6 and 978-3-540-07120-4}, number={ARRAY(0x55f98963a3b0)}, series={Topics in applied physics}, library={UB [Signatur: UBN/UP 9500 G639-1]}, }