Reference health
Completeness of modal logics with prefinite width
4/4 checkable references clean · checked 2026-07-14
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a publisher retraction, withdrawal, or removal notice.
3 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 4 checked references that resolve
The 3 references without a DOI — listed, not checked
no DOI — not checkedE. J. Lemmon, ?Algebraic semantics for modal logic. I, II,? J. Symbolic Logic,31, 45?65, 191?218 (1966).
no DOI — not checkedR. Face, Modal Logic [Russian translation], Nauka, Moscow (1974).
no DOI — not checkedL. L. Maksimova, ?Modal logics of finite layers,? Algebra Logika,14, No. 3, 304?319 (1975).
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