- academia.edu 69152913/The_Provincial_Capitals_of_…Velichkov, The Antique Theatre and the Amphitheatre of Serdica, in: Vachkova – Dimitrov 2014, 249–260.
- worddisk.com wiki/Sofia/These include the 4th century Rotunda of St. George, the walls of the Serdica fortress and the partially preserved Amphitheatre of Serdica.
- http://magdalinastancheva.net en_reviews/Cultural …510. Sofya kadim ve genç. ... of the Bulgarian capital, like the Amphitheatre of Serdica, the main street of the ancient city and his me-dieval walls and gates.
- booked.co.il hotels/bulgaria/sofiaTürkçe Sofya (Bulgaristan) şehrinde en iyi konaklama tesisleri. ... ממוקם בשכונה תרבותית של העיר סופיה, מלון זה נמצא תוך 10 דקות הליכה על Amphitheatre of Serdica.
- http://upcscavenger.com wiki/sofia/These include the 4th century Rotunda of St. George, the walls of the Serdica fortress and the partially preserved Amphitheatre of Serdica.
- wiki2.org en/SofiaThese include the 4th century Rotunda of St. George, the walls of the Serdica fortress and the partially preserved Amphitheatre of Serdica.
- tr.wikial.top wiki/Amphitheatre_of_SerdicaSerdica Amfitiyatrosu - Amphitheatre of Serdica. ... "Sofya-Serdica'da Roma eğlencesi". Minerva: Uluslararası Antik Sanat ve Arkeoloji İncelemesi.
- pegaswitch.com super-blog/is-sofia-bulgaria-worth…...the Vasil Levski National Stadium, the Ivan Vazov National Theatre, the National Archaeological Museum, and the Serdica Amphitheatre.