The following publications are possibly variants of this publication: 
- Neural network for nonsmooth pseudoconvex optimization with general constraintsQingfa Li, Yaqiu Liu, Liangkuan Zhu. ijon, 131:336-347, 2014.  [doi] 
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- A one-layer recurrent neural network for nonsmooth pseudoconvex optimization with quasiconvex inequality and affine equality constraintsNa Liu, Jun Wang 0002, Sitian Qin. NN, 147:1-9, 2022.  [doi]