@article{Ryzhkov2024the, author={Ryzhkov, I.V. and Ryzhkova, A.A.}, title={THE ESSENCE, SIGNIFICANCE AND CLASSIFICATION OF (PRELIMINARY) RESEARCH AS A NON-PROCEDURAL FORM OF USING SPECIAL KNOWLEDGE}, journal={Forensics: yesterday, today, tomorrow}, publisher={East Siberian institute of the Ministry of Internal Affairs of the Russian Federation}, year={2024}, pages={172-181}, volume={0}, issue={1}, }