The Fourth-Order Type Linear Ordinary Differential Equations
  This note reports on the recent advancements in the search for explicit representation, in classical special functions, of the solutions of the fourth-order ordinary differential equations named Bessel-type, Jacobi-type, Laguerre-type, Legendre-type. 
W. N. Everitt (1), D. J. Smith (1) and M. van Hoeij (2) ((1) School of   Mathematics, University of Birmingham, UK, (2) Depa...