@article{ERAAMS_1998_04_a2,
     author = {Geist, Bruce and McLaughlin, Joyce},
     title = {Eigenvalue formulas for the uniform {Timoshenko} beam: the free-free problem},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {12--17},
     publisher = {mathdoc},
     volume = {04},
     year = {1998},
     doi = {10.1090/S1079-6762-98-00041-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-98-00041-9/}
}