https://conference-archive.progressive.bg/en/archive/2021-01-24T14:38:00+02:00https://conference-archive.progressive.bg/en/archive/year-2019/2021-01-30T17:00:29+02:00https://conference-archive.progressive.bg/en/archive/year-2019/conference/2021-01-30T17:00:59+02:00https://conference-archive.progressive.bg/en/awards/2021-01-30T17:00:08+02:00https://conference-archive.progressive.bg/en/awards/2019-edition/2021-02-19T13:14:36+02:00https://conference-archive.progressive.bg/en/archive/konfetencia-2019/2021-05-19T14:43:03+03:00