When only two NARs are created for a person, the NARs are generally connected with 500 see also references and no 663 field. However, when one of the NARs is for a joint pseudonym or a pseudonym used by several persons working independently of each other, the 663 technique is used. | When only two NARs are created for a person, the NARs are generally connected with 500 see also references and no 663 field. However, when one of the NARs is for a joint pseudonym or a pseudonym used by several persons working independently of each other, the 663 technique is used. |