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Some comments on hourglasses

Aguiar, R.

UNKNOWN JOURNAL - TEMPORARY ONLY UNTIL PAPERS ARE CORRECTLY ASSOCIATED - NOT SUITABLE FOR PRODUCTIVITY INDEX Vol. 38, Nº N/A, pp. 69 - 72, October, 2008.

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Abstract
The hourglass concept has been undisputable ruler of networking visions on the last years. As network evolution is now a hot topic, this article aims to reflect on this concept, highlighting its current shortcomings, and suggesting its evolution.
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