@article {HII09, title = {Reduction techniques for the {PNS} problems: a novel technique and a review}, journal = {Optimization and Engineering}, volume = {10}, number = {3}, year = {2009}, pages = {351-361}, author = {Cs. Holl{\'o} and B. Imreh and Cs. Imreh} } @conference {SSB04a, title = {A forgalomszab{\'a}lyoz{\'a}s egy optimaliz{\'a}l{\'a}si modellje}, booktitle = {XXVI. Oper{\'a}ci{\'o}kutat{\'a}si Konferencia}, year = {2004}, month = {may}, author = {Cs. Imreh and V. Bilicki} } @inbook {BHI01, title = {Heuristics for the {PNS} problem}, booktitle = {Optimization theory: Recent development from M{\'a}trah{\'a}za}, year = {2001}, pages = {1-18}, author = {Z. Bl{\'a}zsik and Cs. Holl{\'o} and Cs. Imreh and Z. Kov{\'a}cs} } @article {BHI00, title = {On bottleneck and k-sum versions of the Process Network Synthesis problems}, journal = {Novi Sad Journal of Mathematics}, volume = {30}, number = {3}, year = {2000}, pages = {11-19}, author = {Z. Bl{\'a}zsik and Cs. Holl{\'o} and B. Imreh and Cs. Imreh and Z. Kov{\'a}cs} } @article {BHI00a, title = {On a well solvable class of the {PNS} problem}, journal = {Novi Sad Journal of Mathematics}, volume = {30}, number = {3}, year = {2000}, pages = {21-30}, author = {Z. Bl{\'a}zsik and Cs. Holl{\'o} and B. Imreh and Cs. Imreh and Z. Kov{\'a}cs} } @article {HBI99, title = {On a Merging Reduction of the Process Network Synthesis Problem}, journal = {Acta Cybernetica}, volume = {14}, year = {1999}, pages = {251-261}, author = {Cs. Holl{\'o} and Z. Bl{\'a}zsik and Cs. Imreh and Z. Kov{\'a}cs} }