1. Introduction  
2. Theory  
2.1. The spherical Fourier-Bessel decomposition  
2.2. Three equivalent formulations  
2.3. Estimating Fourier-Bessel coefficients from a real survey  
3. Method Comparison  
3.1. Complexity, accuracy and discretisation grids  
3.2. Speed and accuracy of the Reverse Method  
4. The 3DEX Library  
5. Conclusion