{{ range $agentref := $piece.AgentRefs }}
{{ if (or (eq $agentref.Category "") (eq $agentref.Category "autor")) }}
{{ $agent := GetAgent $agentref.Ref }}
{{- if gt (len $agent.Names) 0 -}}
{{- index $agent.Names 0 -}}
{{ end }}
{{ end }}
{{ end }}
{{ end }}
{{ if $piece.CategoryRefs }}
{{ range $catref := $piece.CategoryRefs }}
{{ $category := GetCategory $catref.Ref }}
{{- if gt (len $category.Names) 0 -}}
{{- index $category.Names 0 -}}
{{ end }}
{{ end }}
{{ end }}
{{ if $piece.WorkRefs }}
{{ range $workref := $piece.WorkRefs }}
{{ $work := GetWork $workref.Ref }}
{{- if $work.PreferredTitle -}}
{{- index $work.PreferredTitle -}}
{{- else if $work.Citation.Title -}}
{{- index $work.Citation.Title -}}
{{ end }}
{{ end }}
{{ end }}
{{ range $annotation := $piece.AnnotationNote.Annotations }}