Functional Analysis and Its Applications · 1997 · 19 citations · 7 references
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The Euler characteristic of the moduli space of curves
John Harer, Don Zagier · Inventiones mathematicae · 1986 · 721 citations
Perturbative series and the moduli space of Riemann surfaces
Robert Penner · Journal of Differential Geometry · 1988 · 359 citations · Full text