1. A. Khalfallah, D. Berrehal, Z. Kabouche. Flavonoids, cytotoxic and antioxidant activities of Evax pygmaea. 3émes journées Scientifiques-LOST, 23-24 Janvier (2018), Constantine, Alger.
2. H. Cherchar, D. Berrehal, A. Khalfallah, Z. Kabouche. Antibacterial activity of Juniperus species growing in Algeria (Cupressaceae). 3émes journées Scientifiques-LOST, 23-24 Janvier (2018), Constantine, Alger
3. S. Bechkri, D.Berrehal, A. Khalfallah, Z.Semra, Z. Kabouche, antibacterial and Antioxydante activities of Algerian salvia species (Lamiaceae). 3émes journées Scientifiques-LOST, 23-24 Janvier (2018), Constantine, Alger
4. S. Bechkri, D. Berrehal, A. Khalfallah, K. Bachari, A. Kabouche, Z. Kabouche, GC and GC/MS analyses and antioxidant activity of seeds oil of Crataegus monogyna Jacq. 1st National seminar on Biology-Health and Oxidative stress (BHOS-2016), 9-10 Novembre (2016), Tebessa, Alger