The three trailing dots weren't part of the original release. They were his. A kind of ellipsis for neglect.
If you tell me what specific you are researching—such as its editing style, Marguerite Duras's writing, or historical context—I can find more targeted academic citations for you. Hiroshima.mon.amour.1959.1080p.Criterion.Bluray...
Hiroshima mon amour is famous for its groundbreaking use of flashbacks, blending past and present, memory and reality, which broke away from conventional narrative cinema. The three trailing dots weren't part of the original release