@book{UBHD-2632725, author={Babbitt, Harold E. and Caldwell, David H.}, title={The free surface around, and interference between, gravity wells}, publisher={Univ. of Illinois}, address={Urbana, Ill.}, year={1948}, pages={60 S.}, language={eng}, number={ARRAY(0x5614ba3dde90)}, series={Engineering Experiment Station bulletin}, library={UB [Signatur: H 254-16 K::374]}, }