Reprinted in Collected Scientific Papers by Wolfgang Pauli, ed. R. Kronig and V. F. Weisskopf, Interscience Publishers, John Willey and Sons, Inc. v.2 (1964) 911.
The Physical Review - the First Hundred Years, AIP Press (1995) CD-ROM.
Selected Papers on Quantum Electrodynamics, editor J. Schwinger, Dover Publications, Inc., New York (1958) 372.
In the following paper we conclude for the relativistically invariant wave equation for free particles: From postulate (I), according to which the energy must be positive, the necessity of Fermi-Dirac statistics for particles with arbitrary half-integral spin; from postulate (II), according to which observables on different space-time points with a space-like distance are commutable, the necessity of Einstein-Bose statistics for particles for arbitrary integral spin.
Related references More (earlier) information appears in W. Pauli and F. J. Belinfante, Physica 7 (1940) 177;
See also L. de Broglie, Compt. Ren. 209 (1939) 265;
M. Fierz, Helv. Phys. Acta 12 (1939) 3;
L. de Broglie, Compt. Ren. 208 (1939) 1697;
B. L. van der Waerden, Die gruppentheoretishe Methode in der Quantentheorie, Berlin (1932);
M. Fierz and W. Pauli, Proc. Roy. Soc. A173 (1939) 211;
Theorem on the connection between spin and statistics.