Tom Lehrer worked at the NSA from 1955 through 1957, and a recent thread on BlueSky reveals one of the papers he wrote while there included a bibliographical entry for “Analytic and Algebraic Topology of Locally Euclidean Metrizations of Infinitely Differentiable Remannian Manifolds” by Lobachevsky. Apparently the joke went unnoticed for almost 60 years.
[via r/TomLehrer]