Creating Pictures In The Style,Josh Sommers of Petaluma, California, USA, has succeeded in creating pictures in the style of Dutch artist MC Escher. Now he decided to reveal his secret mathematical formula, which is the basis of these masterpieces of hypnotic effect Droste. For those who do not know, Droste effect - it fraktralnoe recursive image, or more simply, the image repeating elements which are similar to the picture as a whole.