4 SIMPLE SYSTEMS OF MODAL PROPOSITIONAL LOGIC

[1] Carnap Rudolph, 1963, PHILOS R CARNAP

[2] Church, 1956, INTRO MATH LOGIC, V1

[3] FEYS R, PHILOS R CARNAP

[4] Feys R., 1965, MODAL LOGICS

[5] HINTIKKA J, 1963, ACTA PHILOS FENN, V16, P65

[6] Kripke Saul, 1963, ACTA PHILOS FENN, V16, P83, DOI DOI 10.1007/978-3-0346-0145-0_16

[7] Kripke Saul, 1959, J SYMBOLIC LOGIC, V24, P1, DOI DOI 10.2307/2964568

[8] Langford, 1959, SYMBOLIC LOGIC

[9] LEONARD H, 1951, STRUCTURE METHOD MEA

[10] Montague R., 1963, ACTA PHILOS FENN, P153, DOI 10.2307/2271809

[1] Carnap Rudolph, 1963, PHILOS R CARNAP

[2] Church, 1956, INTRO MATH LOGIC, V1

[3] FEYS R, PHILOS R CARNAP

[4] Feys R., 1965, MODAL LOGICS

[5] HINTIKKA J, 1963, ACTA PHILOS FENN, V16, P65

[6] Kripke Saul, 1963, ACTA PHILOS FENN, V16, P83, DOI DOI 10.1007/978-3-0346-0145-0_16

[7] Kripke Saul, 1959, J SYMBOLIC LOGIC, V24, P1, DOI DOI 10.2307/2964568

[8] Langford, 1959, SYMBOLIC LOGIC

[9] LEONARD H, 1951, STRUCTURE METHOD MEA

[10] Montague R., 1963, ACTA PHILOS FENN, P153, DOI 10.2307/2271809