7 June 2024 https://career.hua.gr/prosklisi-gia-ethnko-diagonismo-neon-epistimonon-2024/ 2023-2024
8 March 2024 https://www.icaew.com/technical/sustainability/essay-writing-competition-2024 2023 - 2024
20 June 2023 https://crowdhackathon.com/sup-free/ 2020 - 2021
20 June 2023 https://www.noynoyideachallenge.gr/ 2020 - 2021