F. J. Anscombe and R. J. Aumann, A definition of subjective probability. The annals of mathematical statistics, pp.199-205, 1963.

F. Bou, F. Esteva, L. Godo, and R. Rodr?guez, Characterizing fuzzy modal semantics by fuzzy multimodal systems with crisp accessibility relations, Proc. of the Joint 2009 IFSA World Congress and EUSFLAT Conf, pp.1541-1546, 2009.

C. Boutilier, Modal logics for qualitative possibility theory, International Journal of Approximate Reasoning, vol.10, issue.2, pp.173-201, 1994.
DOI : 10.1016/0888-613X(94)90015-9

URL : http://doi.org/10.1016/0888-613x(94)90015-9

C. Castelfranchi and R. Falcone, Trust is much more than subjective probability: mental components and sources of trust, Proceedings of the 33rd Annual Hawaii International Conference on System Sciences, p.10, 2000.
DOI : 10.1109/HICSS.2000.926815

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

L. Fariñas-del-cerro and A. Herzig, A modal analysis of possibility theory, pp.11-18, 1991.
DOI : 10.1007/3-540-54507-7_2

B. F. Chellas, Modal logic: an introduction, 1980.
DOI : 10.1017/CBO9780511621192

D. Dubois and H. Prade, Generalized Possibilistic Logic, International Conference on Scalable Uncertainty Management, pp.428-432, 2011.
DOI : 10.1016/S0020-7373(78)80003-0

URL : https://hal.archives-ouvertes.fr/hal-01287713

M. Fattorosi-barnaba and F. De-caro, Graded modalities. I, Studia Logica, vol.141, issue.2, pp.197-221, 1985.
DOI : 10.1007/BF00379767

K. Fine, In so many possible worlds., Notre Dame Journal of Formal Logic, vol.13, issue.4, pp.516-520, 1972.
DOI : 10.1305/ndjfl/1093890715

B. De-finetti, Theory of Probability. A Critical Introductory Treatment, 1974.

G. Harman, Change in View: Principles of Reasoning, 2008.
DOI : 10.1017/CBO9780511814273.003

J. Hintikka, Knowledge and belief: an introduction to the logic of the two notions, 1962.

W. Van-der-hoek and J. Meyer, Graded modalities in epistemic logic. Logical Foundations of Computer ScienceTver'92 pp, pp.503-514, 1992.

E. P. Klement, R. Mesiar, and E. Pap, Triangular norms, 2013.
DOI : 10.1007/978-94-015-9540-7

N. Laverny and J. Lang, From knowledge-based programs to graded belief-based programs. Part I: On-line reasoning, European Conf. on Artificial Intelligence (ECAI), pp.368-372, 2004.
DOI : 10.1007/1-4020-4631-6_8

B. Legastelois, M. J. Lesot, and A. Revault-d-'allonnes, Typology of axioms for a weighted modal logic, Proc IJCAI 2015 Workshop on Weighted Logics for Artificial Intelligence, pp.40-47, 2015.
DOI : 10.1016/j.ijar.2017.06.011

URL : https://hal.archives-ouvertes.fr/hal-01320406

B. Legastelois, M. J. Lesot, and A. Revault-d-'allonnes, Negation of Graded Beliefs, Int. Conf. on Information Processing and Management of Uncertainty in Knowledge-Based Systems , IPMU 16, pp.148-160, 2016.
DOI : 10.1016/S0019-9958(65)90241-X

URL : https://hal.archives-ouvertes.fr/hal-01340493

G. Shafer, A mathematical theory of evidence, 1976.

G. F. Smith, P. G. Benson, and S. P. Curley, Belief, knowledge, and uncertainty: A cognitive perspective on subjective probability, Organizational Behavior and Human Decision Processes, vol.48, issue.2, pp.291-321, 1991.
DOI : 10.1016/0749-5978(91)90016-M

J. Staffel, Can there be reasoning with degrees of belief? Synthese, pp.3535-3551, 2013.

S. Sturgeon, Reason and the Grain of Belief, Nous, vol.42, issue.1, pp.139-165, 2008.
DOI : 10.1007/978-1-4899-3472-7

L. Zadeh, Fuzzy sets, Information and Control, vol.8, issue.3, pp.338-353, 1965.
DOI : 10.1016/S0019-9958(65)90241-X

L. Zadeh, Fuzzy sets as the basis for a theory of possibility, Fuzzy Sets and Systems, 1978.