R. Volzone and J. L. Fontes,  "From eremitical to monastic settlements, from rural towards urban areas: the spatial evolution of the Portuguese eremitical congregation of São Paulo da Serra de Ossa", in Architectures of the soul: Multidisciplinary approaches to the experiences and landscapes of seclusion and solitude, Volzone, R., Fontes, J. L., and Martins, D., Ed., Lisboa, Centro de Estudos de História Religiosa, Universidade Católica Portuguesa, 2022, pp. 177-203