@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}
}
