https://kanban.xsitepool.tu-freiberg.de/zQr6y-FOR02jFZjdBqVx-Q/ Thanks , I've recently been searching for info about this topic for ages and yours is the best I have came upon so far. However, what in regards to the bottom line?

Are you positive about the source?https://kanban.xsitepool.tu-freiberg.de/zQr6y-FOR02jFZjdBqVx-Q/