1. Dicuil (9th century) on triangular and square numbers. Issue 2 (4th May 2019) Authors: Ross, Helen Elizabeth; Knott, Betty Irene Journal: British journal for the history of mathematics Issue: Volume 34:Issue 2(2019) Page Start: 79 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗