Source size calculator

The source size calculator, as published in [1], can be downloaded here. For the most recent version, please refer to the Github repository (external link). 

[1] G. Lovric, P. Oberta, I. Mohacsi, M. Stampanoni, and R. Mokso, Opt. Express 22, 2745 (2014), DOI: 10/q9m.