Source: https://www.researchgate.net/profile/Claudine-Tiercelin/publication/227015389_Logique_psychologie_et_metaphysique_les_fondements_du_pragmatisme_selon_C_S_Peirce/links/00b7d52a38b5dc63e6000000/Logique-psychologie-et-metaphysique-les-fondements-du-pragmatisme-selon-C-S-Peirce.pdf