Nevertheless, the practice remained known only to a few until the early 1980s, when some discoveries of an Israeli school teacher Avraham Oren came to the attention of the mathematician Eliyahu Rips at the Hebrew University of Jerusalem.
Unatoć tome, malom broju ljudi je ova tema bila poznata skroz do ranih 1980-tih godina kada je par otkrića israelskog nastavnika Avraham Oren-a zainteresiralo matematičara Dr.Eliyahu Rips-a sa Hebrejskog Univerziteta u Jeruzalem-u.