R. A. McCoy, “k-space function spaces,” International Journal of Mathematics and Mathematical Sciences, vol. 3, no. 4, pp. 701-711, 1980. doi:10.1155/S0161171280000506
A study is made of the properties on X which characterize when Cπ(X) is a k-space, where Cπ(X) is the space of real-valued continuous functions on X having the topology of pointwise convergence. Other properties related to the k-space property are also considered.