{{ $subtitle := "" }}
{{ if or .Params.journal_title .Params.date .Params.authors_list }}
{{- with .Params.journal_title -}}
{{ $subtitle = printf "%s" .}}
{{- end -}}
{{- with .Params.date -}}
{{ $subtitle = printf "%s%s" $subtitle ( .Format "2006" ) }}
{{- end -}}
{{- with .Params.authors_list -}}
{{ $subtitle = printf "%s%s" $subtitle . }}
{{- end -}}
{{ end }}
{{- partial "header/hero.html"
(dict
"title" .Title
"subtitle" (partial "PrepareHTML" $subtitle)
"context" .
) -}}