[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)
[Payments in Kind in the Educational Activities, Craft Training and School Actions in Bulgarian Lands during the Revival Period and in the First Decades of the 20th Century. Notes and Materials]
(2020)
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