Cardoso, Alexandre, Alexandre Gomes de Siqueira, Valéria Farinazzo Martins, João Soares de Oliveira Neto, Maria Amelia Eliseo, and Ismar Frango Silveira. " Humanizing Online Learning: The Role of AI+XR-Based Virtual Tutors in Adaptive Education." Anais do XXII Congresso Latino-Americano de Software Livre e Tecnologias Abertas, Foz do Iguaçu/PR, 2025. SBC, 2025, pp.473-480.