B-series book
$\to$ Easy Algorithm 1
$\to$ Easy Algorithm 2
$\to$ Easy Algorithm 3
$\to$ Our first B-series program
$\to$ The birth of B-series
$\to$ The first sixth order Runge-Kutta methods
$\to$ The first eighth order Runge-Kutta methods
$\to$ Runge-Kutta test 21