diff --git a/schema/legacy/eoa-tei-strict.rnc b/schema/legacy/eoa-tei-strict.rnc
index 0e55c05..a38f63b 100644
--- a/schema/legacy/eoa-tei-strict.rnc
+++ b/schema/legacy/eoa-tei-strict.rnc
@@ -176,7 +176,7 @@ person =
       element email { text }?,
       element affiliation {
          element roleName { text },
-         element orgName { text }+
+         element orgName { text }*
       }*
    }
 
@@ -313,7 +313,7 @@ subsubsection =
       eoaelement*
    }
 
-head = element head { (text | markup | inline_formula | index | indexanchor | ref )+ }
+head = element head { (text | markup | inline_formula | index | indexanchor | ref | foreign )+ }
 
 floathead =
    element head {
@@ -579,7 +579,7 @@ markup =
 hi =
    element hi {
       attribute  rend { "italic" | "superscript" | "subscript" | "math" | "bold" | "struck" | "spaced" | "smallcaps" },
-      ( text | index | indexanchor )+
+      ( text | index | indexanchor | ref )+
    }
 
 theorem =