Valko, D. (2021). Impact of renewable energy and tax regulation on reducing greenhouse gas emissions in OECD countries: CS-ARDL approach. Ekonomicheskaya Politika. https://doi.org/10.18288/1994-5124-2021-5-40-61 (In Russ.) Scopus (Q2), WoS (ESCI)
Valko, D. (2021). Environmental attitudes and contextual stimuli in emerging environmental culture: An empirical study from Russia. Sustainable Production and Consumption. https://doi.org/10.1016/j.spc.2021.05.008 Scopus (Q1), WoS (ESCI)
Valko, D. (2021). Crowdfunding as a tool for investing in sustainable development projects and its place in the green finance ecosystem. St Petersburg University Journal of Economic Studies. https://doi.org/10.21638/spbu05.2021.105 (In Russ.) WoS (ESCI)
Valko, D. (2020). Circular economy: Basic business models and economic opportunities. Journal of Economics and Economies. https://doi.org/10.31063/2073-6517/2020.17-1.12 (In Russ.)
Valko, D. (2019). Circular economy: Definitions and diffusion of the concept in Russian research. Scientific Journal NRU ITMO. https://doi.org/10.17586/2310-1172-2019-12-2-42-49 (In Russ.)
Valko, D. (2018). A recommendation system based on data mining of a scientometric research profile. Software & Systems. http://doi.org/10.15827/0236-235X.122.275-283 (In Russ.)
Valko, D. (2016). Training software to perform technological calculations. Software & Systems. http://doi.org/10.15827/0236-235X.114.179-184 (In Russ.)