@inbook {Picard 1986, title = {La Grande Chartreuse et les chartreuses de Portes, S{\'e}lignac, et Pierre-Ch{\^a}tel}, booktitle = {Analecta Cartusiana}, volume = {61}, year = {1986}, pages = {3-197}, address = {Salzburg}, keywords = {Grande Chartreuse (historiographia), Pierre-Ch{\^a}tel O.Cart. (historiographia), Portes O.Cart. (historiographia), S{\'e}lignac O.Cart. (historiographia)}, author = {Picard, Jean} }