Sources :
“Lisière”, Kapka Kassabova
https://bnr.bg/fr/post/101314333/le-sanctuaire-de-la-deesse-bastet-a-malko-tarnovo
https://www.vagabond.bg/land-fake-mysteries-1809
https://www.guidebg.com/gradishte-strandzha-mountain
https://www.bgdnes.bg/bulgaria/article/4227138
https://www.strandja.bg/en/info/49-istoria-en
