00320nas a2200121   4500000000100000000000100001008004100002100002000043700001900063700002200082700001800104245007600122       2021                            d1 aGaetano Pianese1 aNicola Chieffo1 aAntonio Formisano1 aDoncho Partov00aMechanical Analysis of a Heritage Structure in The City Center of Sofia