Kleurinperking: Verskil tussen weergawes

}}</ref> – kwarke kan dus net in hadrone waargeneem en bestudeer word en nie alleen nie.<ref>{{cite book|title=Relativistic quantum mechanics and quantum fields|last=Wu|first first1=Ta-youYou |coauthorslast1=W.-Y.Wu |first2=Pauchy| last2= Hwang |coauthors= |pages=321|publisher=World Science|year=1991|isbn=9810206089}}</ref>