Ahmadi, F. (2021). “Socio-Economic and Security Pathology of Kolberi Phenomenon in Kurdistan Province, Kurdistan”, Police Science Quarterly, Vol. 12, No. 1, 1-24. (Persian).
Asente, C.W. (2013). “Unraveling the health- related challenges of women in the informal economy: accounts of women in cross- border trading in Accra, Ghana”, Geojournal, Vol. 78, No. 3, 525 - 537.
Azkia, M.; Rahnama, Y. (2008). “Study of social factors affecting fuel smuggling; A case study of Bagh Shaygan, Mahabad”, Journal of Sociological Researches, Vol. 2, No. 2, 28-35. (Persian).
Blaikie, N. (2007). Approaches to Social Enquiry: Advancing Knowledge, Polity; 2 edition.
Cohen, L., Manion, L., and M., Keith (2007). Research Methods in Education, London: Routledge.
Dell’Anno, R. (2021). “Theories and definitions of the informal economy: A survey”, Journal of Economic Surveys,
doi.org/10.1111/joes.12487.
Khaledi, K. (2017). “Kolbari phenomenon in Kurdish provinces of Iran, Tehran: Chirag Andisheh Publication. (Persian).
Kladivo, P., Ptacek, P., Roubinek, P., Ziener, K. (2012). The Czech-Polish and Austrian - Slovenian borderlands - similarities and differences in the development and typology of regions. Moravian geographical reports, Vol. 20. No. 3, 48-63.
Leeboupao, Leeber; Phonesaly, S; Phetsamone S; Souphith, D; Vanthana N. (2004). Lao PDR Cross Border Economy,Case Study In Dansavanh, Savannakhet, and Houaysai/ Tonpheung, Lao PDR, National Economic Research Institute.pp. 44-59.
Mahmodi, A. (2021). The lived experience of the border residents about social life hardships (case study: Hani Garmeleh village), Ma Thesis, Department of Sociology, University of Kurdistan. (Persian).
Manjoko, C., & Ranga, D. (2017). “Opportunities and challenges faced by women involved in informal cross-border trade in the city of Mutare during a prolonged economic crisis in Zimbabwe”, Journal of the Indian Ocean Region. Vol. 13, No. 1, 25-39.
Mohammadpour, A. (2010). Anti-Method: Basics and Principles of Qualitative Methods, Tehran, Sociologists Publishing. (Persian).
Mudimbe, V. Y. (1988). The invention of Africa: Gnosis, philosophy, and the order of knowledge. Bloomington: Indiana University Press.
Moraczewska, A. (2010). “The changing interpretation of border functions in international relations”, Revista Română de Geografie Politică, Vol.2, No. 2, 329-340.
Sam Gis, B (2021). Passage of no return, Etemad newspaper, 16th of July, No. 5169, P. 11. (Persian).
Sheneyeh, I. A., Abonge, C., & Fonjong, L. (2021). “Rethinking the Nature, Implications and Challenges of Informal Cross Border Trade by Women from Cameroon across the Cameroon-Nigeria Southwestern Borders”, Open Journal of Social Sciences,Vol. 9, No. 10, 248-266.
Silverman, D. (2005). Doing Qualitative Research, London: Sage Publications Inc.
Soleimani K., Mohammadpour A. (2020). “Life and labor on the internal colonial edge: Political economy of kolberi in Rojhelat”, The British Journal of Sociolog, Vol. 71, No. 4, 741-760.
Stryjakiewicz, T. (1998). “The changing role of border zones in the transforming economies of East-Central Europe: The case of Poland”, Geo Journal, Vol. 44, No. 3, 203-213.
Strauss, Anselm L. (1990). Basic of qualitative research: techniques and procedures for grounded theory, translated by Ibrahim Afshar, Tehran, Nay Publishing. (Persian).
Turner, J. (1998). The Structure of Sociological Theory, Sixth Edition Wadsworth Publishing.
Turner, J. (2005). The Structure of Sociological Theory, New York: Wadsworth Publishing.
Van der Molen, P. (2018). “Informal economies, state finances and surveyors”, Survey Review, Vol. 50, No. 358, 16-25.
Williams, C. C., (2015). “Out of the shadows: Classifying economies by the extent and nature of employment in the informal economy”, International Labour Review, Vol.154, No. 3, 331–351.
Williams, C. C., & Kedir, A. (2018). “Evaluating competing theories of informal sector entrepreneurship: A study of the determinants of cross-country variations in enterprises starting-up unregistered”, The International Journal of Entrepreneurship and Innovation, Vol. 19, No. 3, 155–165.
Wu, CT. (1998). “Cross-border development in Europe and Asia”, GeoJournal, Vol. 44, No. 3,189–201.