Dear Sir or Madam, I have a question regarding GSL.
For the numerical integration of ordinary differential equations, it is possible to choose the explicit embedded Runge-Kutta Prince-Dormand (8, 9) method. However, I only found the (7, 8) version in the literature (Prince, Peter J., and John R. Dormand. "High order embedded Runge-Kutta formulae." Journal of computational and applied mathematics 7.1 (1981): 67-75.). Do you have the reference for the (8, 9) method or is this a typo in the code? Thank you in advance, Vitor
