On the Axisymmetric Problem of Elasticity Theory for a Medium with Transverse Isotropy R. EubanksE. Sternberg Indiana University Mathematics Journal 1954 text pdf 10.1512/iumj.1954.3.53006 10.1512/iumj.1954.3.53006 en Indiana Univ. Math. J. 3 (1954) 89 - 101 state-of-the-art mathematics http://iumj.org/access/