Jankiewicz J, Gunes AA, Gunes O, Garsztka P. Informal Earnings and Domestic Production - the size of the shadow economy of the household. Case of Turkey. REF [Internet]. 2025 Dec. 31 [cited 2026 Feb. 4];9(2):117-42. Available from: https://www.journals.ue.poznan.pl/REF/article/view/2770