On biaccessible points in the Julia set of a Cremer quadratic polynomial
  We prove that the only possible biaccessible points in the Julia set of a Cremer quadratic polynomial are the Cremer fixed point and its preimages. This gives a partial answer to a question posed by C. McMullen on whether such a Julia set can contain any biaccessible point at all 
Dierk Schleicher and Saeed Zakeri