i work in a research team to solve a multi objective engineering problem and i concentrate on **NSGA-II** algorithm ,but now i stuck i need to understand how SBX crossover work with numerical example so i can implement it or even if there's a ready made code i can adapt according to our problem but first i need to see numerical example so i can go on,any resource available for that i only found a presentation on [http://www.slideshare.net/](http://www.slideshare.net/paskorn/self-adaptive-simulated-binary-crossover-presentation) but only equations no example.