New answers tagged reference-request
Turning kjo's comment into an answer, the code is available from the publisher here.
To get a fixed step size with the BDF method you can lower the AccuracyGoal and PrecisionGoal to increase the adaptive step sizes and then use MaxStepSize to limit the step size to any value you want. Get an example stiff system from the documentation: Needs["DifferentialEquations`NDSolveProblems`"]; Needs["DifferentialEquations`NDSolveUtilities`"]; system ...
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