List of Articles Time lags Open Access Article Abstract Page Full-Text 1 - The influence of Financial Variables’ Time Lags in Predicting Operating Profit and Operating Cash Flows احمد خدامی پور رضا پوراحمد علی ترک زاده ماهانی Open Access Article Abstract Page Full-Text 2 - MILP models and valid inequalities for the two-machine permutation flowshop scheduling problem with minimal time lags Imen Hamdi Saïd Toumi Open Access Article Abstract Page Full-Text 3 - Expansion methods for solving integral equations with multiple time lags using Bernstein polynomial of the second kind M. Paripour Z. Shojaei S. Abdolahi