2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/23190We present empirical data on frequency and pattern of misprints in citations to twelve high-profile papers. We find that the distribution of misprints, ranked by frequency of their repetition, follows Zipf's law. We propose a stochastic model of citation process, which explains these findings, and leads to the conclusion that 70-90% of scientific citations are copied from the lists of references used in other papers.Some corrections and additions. To appear in ScientometricsDisordered Systems and Neural NetworksPhysics and Societytext