List of Articles utility function Open Access Article Abstract Page Full-Text 1 - A Regret Minimization Approach in Product Portfolio Management with respect to Customers’ Price-sensitivity Maryam Esmaeili Azadeh Arjmand 10.22094/joie.2018.746.1476 20.1001.1.22519904.2019.12.1.9.6 Open Access Article Abstract Page Full-Text 2 - A Two-dimensional Warranty Model with Consideration of Customer and Manufacturer Objectives Solved with Non-dominated Sorting Genetic Algorithm Amin Asadi Mohammad Saidi-Mehrabad Faranak Fathi Aghdam 10.22094/joie.2018.538225 20.1001.1.22519904.2019.12.1.2.9