Mathematics
Mathematics
RITGER, PAUL D. and NICHOLAS J. ROSE.
Differential Equations with Ap..N.Y., Dover Publications, (2000).
LANDAU, LIFSHITZ, PITAEVSKII.
Electrodynamics of Continous M..Oxford, N.Y., Pergamon Press, n.date (ca 1980).
KLEENE, S. C. [STEPHEN COLE].
On Notation for Ordinal Number..Wisconsin, The Association for Symbolic Logic, 1938-39.