List of Articles Continuous variables Open Access Article Abstract Page Full-Text 1 - Hybrid Teaching-Learning-Based Optimization and Harmony Search for Optimum Design of Space Trusses Siamak Talatahari Vahid Goodarzimehr Nasser Taghizadieh 10.22094/joie.2019.1866904.1649 20.1001.1.22519904.2020.13.1.15.9