SAEED GULLSHENAS , Mohammad; AKBARPOUR SHIRAZI, Mohsen. Designing a Gamification Model Based on Customer Engagement Indicators to Increase Loyalty and Revenue in Small and Medium-Sized Online Businesses. Digital Transformation and Administration Innovation, [S. l.], p. 1–9, 2026. Disponível em: https://journaldtai.com/index.php/jdtai/article/view/208.. Acesso em: 26 oct. 2025.