Building a Regional Platform for Monitoring Air Quality. - Stanimir Stojanov; Boyan Lyubomirov Belichev; Veneta Tabakova-Komsalova; Yordan Georgiev Todorov; Angel Atanasov Golev; Georgi Kostadinov Maglizhanov; Ivan Stoyanov; Asya Stojanova-Doycheva (Future Internet, 2026)