@book{19487, author = {Aleksandrov, A. D. and Kolmogorov, A. N.}, title = {Mathematics: Its Content, Methods, and Meaning. In 6 parts. Part 2: Analytic Geometry, Algebra (theory of the algebraic Equation), Ordinary Differential Equations.}, publisher = {American Mathematical Society}, year = {1963}, address = {Prov. Rhode Island} }