[1] Andrej Dudrovich was born in Serbia, then part of the Austrian Empire before emigrating to Imperial Russia.
The following year (1814) he published his doctoral dissertation -- "De philosophiae genuino conceptu nec non necessitate ejus absoluta" (The philosophy is not a true concept and its absolute necessity) under the watchful eye of Johann Schad, his mentor.
[4] Timofei Fedorovic Osipovsky and other scientists at Kharkov found themselves at odds with their Kantian philosophers, particularly Atanasije Stojković and Schad.
Commenting on a physics textbook by his colleague Stojkovich in 1814, Osipovsky objected to the way it was arranged corresponding to the order of Kant's categories.
Osipovsky was the principal opponent of German idealism in all its form but especially of Kant, and of Stojkovich and Schad for that matter.