[How many and which were the first factories in the bulgarian lands before the liberation in 1878? Attempt of analysis relying on the sources and the historiography]
(2016)
[Aspects of the Economic Crisis in the Bulgarian Lands during the 1850s and 1860s according to the Data from the Archive of the Krastich Brothers, Merchants from the Town of Svishtov]
(2019)
[The Anarchy, the Russo-Turkish Wars and the Uprisings in the Ottoman Empire from the End of the 18th and the First Decades of the 19th Century as a Factor in the Development of Cities in the Bulgarian Lands Under Ottoman Rule]
(2025)
![Кредитни институции по българските земи през XVIII - XIX век. Опит за обзор [Credit institutions in the bulgarian lands during the 18th and 19th centuries. An attempt for review]](https://eclipse.ue-varna.bg/storage/img/1/4/F0076190.PDF.jpg?1775559826)
![Официални норми за дейността на османските търговци с берат от 60-те години на ХIX век. Споделени практики от българските земи [Official regulations of the ottoman beratli merchants' activity in the 1860s. Shared practices from the bulgarian lands]](https://eclipse.ue-varna.bg/storage/img/1/4/F0076192.PDF.jpg?1775560264)