“Bathing in the Colour”: from the Ra Therapy to Contemporary Colour and Light Environment: (Polychromy as an eternal paradigm of the livable environment). project baikal, Irkutsk, Russian Federation, v. 16, n. 60, p. 96–105, 2019. DOI: 10.7480/projectbaikal.60.1480. Disponível em: https://projectbaikal.com/index.php/pb/article/view/1480. Acesso em: 10 may. 2026.