References

1. QUAN YUAN PhD dissertation. FINDING ALL BESSEL TYPE SOLUTIONS FOR LINEAR DIFFERENTIAL EQUATIONS WITH RATIONAL FUNCTION COEFFICIENTS
2. https://mathworld.wolfram.com/BesselDifferentialEquation.html
3. http://www.mhtlab.uwaterloo.ca/courses/me755/web_chap4.pdf
4. https://math.stackexchange.com/questions/3477732/can-t-see-that-an-ode-is-equivalent-to-a-bessel-equation
5. https://math.stackexchange.com/questions/2046007/converting-ode-solution-to-bessel-function
6. https://math.stackexchange.com/questions/585240/bessel-function-with-complex-argument