@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}
}
@inbook {BHI99,
	title = {Kisz{\'a}molhat{\'o} korl{\'a}tok speci{\'a}lis {PNS}-probl{\'e}maoszt{\'a}lyok lehets{\'e}ges megold{\'a}sainak a sz{\'a}m{\'a}ra},
	year = {1999},
	pages = {182-194},
	author = {Z. Bl{\'a}zsik and Cs. Holl{\'o} and B. Imreh}
}
@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}
}
@article {BHI98,
	title = {On Decision-Mappings Related to Process Network Synthesis Problem},
	journal = {Acta Cybernetica},
	volume = {13},
	year = {1998},
	pages = {319-328},
	author = {Z. Bl{\'a}zsik and Cs. Holl{\'o} and B. Imreh}
}
@article {BHI98a,
	title = {Explicit bounds for the number of feasible solutions of special {PNS}-problem classes},
	journal = {Pure Mathematics and Applications},
	volume = {9},
	year = {1998},
	pages = {17-27},
	author = {Z. Bl{\'a}zsik and Cs. Holl{\'o} and B. Imreh}
}
