Getting versions details in sharepoint online using rest api

Getting versions:

1) https://mymercator.sharepoint.com/sites/Inspire/_api/web/GetFileByServerRelativeUrl('/sites                /Inspire/OceanContracts/Ocean_Template(FT090116)_MSC_16-                                                    095OTE_AEL.xlsm')/Versions?$expand=CreatedBy.
2) https://mymercator.sharepoint.com/sites/Inspire/_api/web/lists/getbytitle('OceanContracts')/Items(3)/File/Versions.
3) https://mymercator.sharepoint.com/sites/Inspire/_api/web/lists/getbytitle('OceanContracts')/items?$expand=File/Versions/CreatedBy