Here's a paper which you could [unclear] -- designed by a mathematician at Harvard in 1928, Arthur Stone, documented by Martin Gardner in many of his many books.
Tai popierius, kurį jūs galėtumėte [neaišku]- sukurtas Harvarde 1928 metais matematiko Artūro Stouno, aprašytas daugelyje iš Martino Gardnerio knygų.