OJG, (2012) Worldwide refining company and refinery location, in worldwide refining survey, Oil and gas Journal.
 Wiki, O.R. A Barrel Full oil and gas wiki , global refineries. 2014; Available from: http://abarrelfull.wikidot.com/global-refineries.
 Pourmoghaddam, P., Delavar Moghaddam M., and Davari, S., (2015) Selection of the best sulfur removal technology from Iranian steam power plants with regard to technical and economical considerations, Niro research institute: Energy and environment research center.
 Shaeri, A. M., Rahmati, A. (2012). Human’s environmental laws, regulations, criteria and standards. Department of environment (DOE), Tehran, Iran: Hak publishing Co.
 ChinaFAQs, (2012). China Adopts World-Class Pollutant Emissions Standards for Coal Power Plants, The Network for Climate and Energy Information World Resources Institute
 Himmelblau, D. M., Riggs, J. B. (2012). Basic principles and calculations in chemical engineering. FT Press
 rb bertomeu, S.L., Method of calculation of theoritical SO2 content in the exhaust gases from combustion of fuel oil. 2000: www.rbbertomeu.com.
 Bilal, S., Mohammed Dabo, I. A., Mujahid, A. U., Kasim, S. A., Nuhu, M., Mohammed, A., Aminu, Y. Z. (2013). Simulation of hydrodesulphurization (HDS) unit of Kaduna refining and petrochemical company limited. Chemical process engineering research, 13, 29-35.
 Kadijani, J. A., Narimani, E. (2016). Simulation of hydrodesulfurization unit for natural gas condensate with high sulfur content. Applied petrochemical research, 6(1), 25-34.
 Shokri, S., M. Ahmadi Marvast, and M. Tajerian.(2007). Production of ultra low sulfur diesel: simulation and software development. Petroleum and coal. 49(2), 48-59
 KBC, 2006. HXX-SIM User guide, hydroprocessing technologies manual, reactor model KBC advanced technologies.
 Rodriguez, M. A., Ancheyta, J. (2004). Modeling of hydrodesulfurization (HDS), hydrodenitrogenation (HDN), and the hydrogenation of aromatics (HDA) in a vacuum gas oil hydrotreater. Energy and fuels, 18(3), 789-794.
 Fahim, M. A., Al-Sahhaf, T. A., Elkilani, A. (2009). Fundamentals of petroleum refining. Elsevier.
 Meyers, R.A. and R.A. Meyers, 2004. Handbook of petroleum refining processes. Vol. 548. McGraw-Hill New York.
 Ancheyta, J. (2013). Modeling of processes and reactors for upgrading of heavy petroleum. CRC Press.
 ASTM, D2887, (2012) Boiling Range Distribution of Petroleum Fractions by Gas Chromatograph, ASTM Annual Book of Standards, Section.
 Lyons, W. C., Plisga, G. J. (2011). Standard handbook of petroleum and natural gas engineering. Gulf professional publishing.
 Coker, A. K. (2015). Ludwig's applied process design for chemical and petrochemical plants. Gulf professional publishing.
 Couper, J. R., Penney, W. R., Fair, J. R. (2009). Chemical process equipment revised 2E: selection and design. Gulf professional publishing.
 Towler, G., Sinnott, R. K. (2012). Chemical engineering design: principles, practice and economics of plant and process design. Elsevier.
 ASM International, Blau, P. J., Davis, J. R. (2001). ASM Handbook: Properties and selection: irons, steels, and high-performance alloys. ASM international.
 Peters, M. S., Timmerhaus, K. D., West, R. E., Timmerhaus, K., West, R. (1968). Plant design and economics for chemical engineers (Vol. 4). New York: McGraw-Hill.
 Aspen, Aspen icarus process evaluator TM version 11.1. 2001, Aspen Tech. Ten canal park, Cambridge, Massachusetts, 02141- 2201, USA.
 Farrar, G.(2014). Nelson-Farrar Cost Indexes. Oil and gas Journal. 112(1).
 Cruz, F. E., de Oliveira Júnior, S. (2008). Petroleum refinery hydrogen production unit: exergy and production cost evaluation.International journal of thermodynamics, 11(4), 187-193.
 Platts.(2013). Asia pacific/Persian gulf marketscan. 32(132).
 Rosendahl, K. E. (1998). Social costs of air pollution and fossil fuel use–A macroeconomic approach. Statistisk sentralbyrå.
 Rahimi, N., (2014). Social (external) costs of NOX, SO2 and CO2 emission from energy sector (power plants) in Iran . Journal of environmental scienlantes and technology. 16(3), p. 107-117.