- Zervas E. (2008), Analysis of the European market of new passenger cars and correlations with their CO2 emissions, WWAI’08, October 24-26, 2008, Corfu, Greece.
- Zervas E. (2009), Autumn in Philippi plain – landscape in (smoke) fog. The impacts of straw and pet burning (Φθινόπωρο στον κάμπο των Φιλίππων – τοπίο στην (καπνο)ομίχλη. Οι συνέπειες της καύσης της καλαμιάς (και της τύρφης)), Lugs and modern life, May 29-30, Philippi, Kavala, Greece, (in Greek).
- Zervas E. (2009), Non-regulated exhaust pollutants emitted from passenger cars of different technology, 5th International Conference on Energy, Environment, Ecosystems and Sustainable Development (EEESD’09), September 28-30, Athens, Greece.
- Zervas E. (2011), Relationship between economic growth and environmental degradation (Environmental Kuznets Curve), 7th International Conference on Energy, Environment, Ecosystems and Sustainable Development (EEESD’11), November 17-19, Angers, France.
- Zervas E. (2012), Application of descriptive statistical analysis and time series analysis on atmospheric pollution, 3rd International Conference on Development, Energy, Environment, Economics (DEEE ’12), December 2-4, Paris, France.
- Zervas E. (2013), Smoking. A source of air pollutants from combustion (Κάπνισμα, Μια πηγή αερίων ρύπων από καύση), 22nd PanHellenic Respiratory Congress, Dec 5-7th, Athens, Greece (in Greek).
- Zervas E. (2015), e-cigarette constituents and particle emissions, ERS International Congress 2015, 26-30th September, Amsterdam, Nederlands.
- Zervas E. (2017), Climate change in Thessaly during the last decades (Μεταβολές του κλίματος της Θεσσαλίας τις τελευταίες δεκαετίες), 1st PanHellenic Conference. Climate Change: Local administration and Thessaly facing the global challenge, June 9-10, Karditsa, Greece (in Greek).
- Zervas E. (2018), Novel tobacco products and their impact (Νέα προϊόντα καπνού και επιπτώσεις τους), 8th Panhellenic Atherosclerosis Conference, Nov 20th-Dec 1st, Athens, Greece (in Greek).
- Zervas E. (2019), New data on tobacco products (Νεότερα δεδομένα για τα καπνικά προϊόντα), 28rd Greek Respiratory Congress, Dec 12-15, Athens, Greece (in Greek).
- Zervas E. (2020), What is environmental design, 1st International Conference On Environmental Design, Oct 24-15, Athens, Greece (virtual).
- Zervas E. (2022), Toxicity and e-cigarette, 10th National Congress of the Hellenic Atherosclerosis Society, Dec 1-3, Athens, Greece (In Greek).
- Zervas E. (2023), e-cigarette: emissions and toxicity, 22th Conference of the Hellenic Atherosclerosis Society, March 31, Ioannina, Greece (In Greek)
- Zervas E. (2023), Indoor Air Pollution due to New Tobacco Products, Bioclimatic Architecture and Passive Strategies, BAPS2023, Nov 6, Constantine, Algeria.