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Dedicated to the memory of Alex Zabrodsky
This work was partially supported by the National Science Foundation, the Massachusetts Institute of Technology and AT&T Bell Laboratories. The second author also acknowledges support from the Alon foundation and from the Bat Sheva foundation.
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Björner, A., Kalai, G. An extended Euler-Poincaré theorem. Acta Math. 161, 279–303 (1988). https://doi.org/10.1007/BF02392300
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DOI: https://doi.org/10.1007/BF02392300