)*David Lewis, "Convention: A Philosophical Study", (1969; Harvard University Press)*David Lewis, "On the Plurality of Worlds" (1986; Blackwell)*Saul Kripke, "Identity and Necessity".
)* David Lewis, "Convention: A Philosophical Study", (1969; Harvard University Press)* David Lewis, "On the Plurality of Worlds" (1986; Blackwell)* Saul Kripke, «Identity and Necessity».