10,118 followers
10,118 followers
I've found only 3-4 refs on this, all recent and without any justification for the notation. https://t.co/cd84cA8lsd https://t.co/AGGHMoc2bS https://t.co/zcy1xv2tjk
I've found only 3-4 refs on this, all recent and without any justification for the notation. https://t.co/cd84cA8lsd https://t.co/AGGHMoc2bS https://t.co/zcy1xv2tjk