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4 events
when toggle format what by license comment
Mar 20 at 14:34 history edited Salvo Tringali CC BY-SA 4.0
updated the list of references
Feb 21, 2022 at 9:26 history edited Salvo Tringali CC BY-SA 4.0
fixed a detail and added the definition of duo ring
Feb 20, 2022 at 22:45 vote accept Taras Banakh
Feb 20, 2022 at 22:20 history answered Salvo Tringali CC BY-SA 4.0