Mathematics
Mathematics
KLEENE, S. C. [STEPHEN COLE].
On Notation for Ordinal Number..Wisconsin, The Association for Symbolic Logic, 1938-39.
VOLKOVYSKII, L.I.;LUNTS, G.L.;ARAMANOVICH, I.G.
A Collection of Problems on Co..New York, Dover Publ., 1991.
JEFFREYS, HAROLD and BERTHA SWIRLES.
Methods of Mathematical Physic..Cambridge, University Press, 1956.