Ein Stein paving infinity

poincare hyperbolic disk with einstein tessellation

Ein Stein (A Stone in Deutch). Base type IH28 on Poincaré hyperbolic disk with rotations 4 and 5
Since Escher, it seems that no one has created a hyperbolic tiling without the help of a dedicated computer program.
And these tilings are mostly taken from Escher's drawings.
This one, not only was created without a computer program but is impossible to reproduce with.
It is, moreover, created in vector while those resulting from program are in pixels.