@article{1077489209,
author = {Buchanan, H. E. and Duren, Jr., W. L.},
title = {On the characteristic exponents in certain types of problems of mechanics},
journal = {Duke Math. J.},
volume = {1},
number = {1},
year = {1935},
pages = { 436-441},
language = {en},
url = {http://dml.mathdoc.fr/item/1077489209}
}
Buchanan, H. E.; Duren, Jr., W. L. On the characteristic exponents in certain types of problems of mechanics. Duke Math. J., Tome 1 (1935) no. 1, pp. 436-441. http://gdmltest.u-ga.fr/item/1077489209/