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A method of essential hazard correction avoiding the insertion of delay elements into the feedback branches of an asynchronous switching circuit was suggested in a recent paper by Armstrong, Friedman, and Menon [4]. This method is always easily applicable when the line stray delays can be neglected, but the resulting circuit often contains branches with more than two levels of logical elements.
Asynchronous switching circuits, essential hazard correction, minimal delay realizations, without delay elements, speed of asynchronous switching circuits.

J. Hlavicka, "Essential Hazard Correction Without the Use of Delay Elements," in IEEE Transactions on Computers, vol. 19, no. , pp. 232-238, 1970.
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