[A Statistical Study of the Relations between the Average List Number of Workers and the Scope of Services Rendered in Bulgaria's Housing and Municipal Economy]
(1989)
[The contribution of Gabrovo - from the revival crafts to the industry of new times (based on documents in Regional Historical Museum - Gabrovo)]
(2016)
![Икономическа ефективност от публично-частното партньорство в областта на техническата инфраструктура и комуналното стопанство [Economic efficiency of the public-private partnership in the area of technical infrastructure and public utilities]](https://eclipse.ue-varna.bg//storage/img/3/F0007450.PDF.1.png)
