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Safety & Defense > 2021 > 3 > 82--98
Annales Universitatis Mariae Curie-Skłodowska, Sectio H Oeconomia > 2013 > 47 > 3 > 157-166
Safety & Defense > 2021 > 3 > 82--98
Annales Universitatis Mariae Curie-Skłodowska, Sectio H Oeconomia > 2013 > 47 > 3 > 157-166