By Ferguson, Thomas Macaulay
By Hansson, Sven Ove
By Torza, Alessandro
By Bengtsson, Gisela, Säätelä, Simo, Pichler, Alois
By Dalla Chiara, Maria Luisa, Giuntini, Roberto, Leporini, Sergioli, Giuseppe
By Révész, György E.
By Henle, James M.
By Polya, G., Conway, John H.
By Dowek, Gilles
By Thompson, Paul B.
By Gibson, Arthur, O'Mahony, Niamh, Wittgenstein, Ludwig, Skinner, Francis
By Jech, Thomas
By Solozhentsev, E.D.
By Madarász, Judit, Szekely, Gergely
By Casadio, Claudia, Scott, Philip J.
By Markin, Vladimir, Zaitsev, Dmitry
By Mundici, D.
By Woleński, Jan
By Weiss, Christina
By Fazio, Davide, Ledda, Antonio, Paoli, Francesco
By Rahman, Shahid, McConaughey, Zoe, Klev, Ansten, Clerbout, Nicolas
By Fernández-Fernández, Claudia
By Maker, Brainstorm
By Alexander Prestel, Charles N. Delzell
By Claude Sabbah
By Ralf Schindler
By Peter J. Eccles (University of Manchester)
By William Bolton (Formerly Lecturer, Buckingham Chilterns University College, High Wycombe, UK)
By Lakatos/Worrall/Zahar
By Suppes, Patrick