On irrationality exponents of generalized continued fractions
  We study how the asymptotic irrationality exponent of a given generalized continued fraction \[ \K_{n=1}^\infty \frac{a_n}{b_n}\,,\quad a_n, b_n\in \mathbb{Z}^+, \] behaves as a function of growth properties of partial coefficient sequences $(a_n)$ and $(b_n)$. 
Jaroslav Hancl, Kalle Lepp\"al\"a, Tapani Matala-aho and Topi   T\"orm\"a
math.NT