Kazandzhieva, V., Paroushev, Z. The Balkan-mountain pass at the Village of Tchenge as an Opportunity to Explicit the Heritage of the Dervent Settlements. Blagoevgrad: SWU Neofit Rilski Publ. House, 2015 p. 47 - 54, 978-954-00-0008-4.
Kazandzhieva, V., Paroushev, Z. The Balkan-mountain pass at the Village of Tchenge as an Opportunity to Explicit the Heritage of the Dervent Settlements. Blagoevgrad: SWU Neofit Rilski Publ. House, 2015 p. 47 - 54, 978-954-00-0008-4.
Kazandzhieva, V., Paroushev, Z. (2015) The Balkan-mountain pass at the Village of Tchenge as an Opportunity to Explicit the Heritage of the Dervent Settlements, Blagoevgrad: SWU Neofit Rilski Publ. House p. 47 - 54, 978-954-00-0008-4.
Kazandzhieva, V., & Paroushev, Z. (2015). The Balkan-mountain pass at the Village of Tchenge as an Opportunity to Explicit the Heritage of the Dervent Settlements. Blagoevgrad: SWU Neofit Rilski Publ. House, p. 47 - 54.
Kazandzhieva V, Paroushev Z. The Balkan-mountain pass at the Village of Tchenge as an Opportunity to Explicit the Heritage of the Dervent Settlements. Blagoevgrad: SWU Neofit Rilski Publ. House; 2015. p. p. 47 - 54. ISBN: 978-954-00-0008-4.
