OBS_VALUE: <ul><li><a href=https://search.et.gr/el/fek/?fekId=465773 target=_blank>Law 4053/2012 regulating postal market operation, telecommunication issues and other provisions(Νόμος 4053/2012, Ρύθμιση λειτουργίας της ταχυδρομικής αγοράς, θεμάτων ηλεκτρονικών επικοινωνιών και άλλες διατάξεις, (ΦΕΚ 44/Α/7.3.20120, adopted 2012, Article 21, last amended on 4.12.2020)</a></li><li><a href=https://www.eett.gr/opencms/export/sites/default/EETT/Journalists/MarketAnalysis/MarketReview/PDFs/2019.pdf target=_blank>EETT 2019 Market review(2019 EETT Market Review, released in January 2021, Chapter 2: Postal Services, page 108)</a></li></ul>