@article{eage:/content/papers/10.3997/2214-4609.201408061, author = "Georgiev, G.", title = "Understanding of Petroleum System-Play Concept and Assessment for Bulgaria", journal= "", year = "1999", volume = "", number = "", pages = "", doi = "https://doi.org/10.3997/2214-4609.201408061", url = "https://www.earthdoc.org/content/papers/10.3997/2214-4609.201408061", publisher = "European Association of Geoscientists & Engineers", issn = "2214-4609", type = "", eid = "cp-132-00464", }