Important Factors for Improving Google Search Rank. - Christos Ziakis; Maro Vlachopoulou; Theodosios Kyrkoudis; Makrina Karagkiozidou (Future Internet, 2019)

Sentiment Analysis on COVID-19 Twitter Data: A Sentiment Timeline. - Makrina Karagkiozidou; Paraskevas Koukaras; Christos Tjortjis (AIAI (2), 2022)