:::Just to cut in here, Ivan. What the director challenges you to do here, they did a while ago on another talk page, and their claim here about there not being a "single source in existence, anywhere" is simply not true. What's worse, they Director knows it, but chooses deliberately to lie here. There's no way to go about this but this is just what it is - a lie. Director was informed about a WP:RS supporting the divison twice: here and here.