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Almasi, M.H. and Sadollah, A. and Kang, S. and Karim, M.R. (2016) Optimization of an improved intermodal transit model equipped with feeder bus and railway systems using metaheuristics approaches. Sustainability, 8 (6). p. 537. ISSN 2071-1050, DOI https://doi.org/10.3390/su8060537.