@article{tumarkin:1959:asl,
    author = {Tumarkin, S. A.},
     title = {Asymptotic solution of a linear nonhomogeneous second order
              differential equation with a transition point and its
              application to the computations of toroidal shells and
              propeller blades},
   journal = {J. Appl. Math. Mech.},
    volume = {23},
      year = {1959},
     pages = {1549–1565},
   mrclass = {34.00 (73.00)},
  mrnumber = {MR0114975 (22 \#5784)},
mrreviewer = {F. W. J. Olver},
       doi = {10.1016/0021-8928(59)90011-5},
     zblno = {0124.40806}}