Error: Depending on the structure bibl should have persName, date and biblScope elements. Error: persName elements inside bibl elements should be also inside author element. Warning: 'bibl' element contains 2 'persName' elements. Warning: 'bibl' element contains referencias (ref). ERROR: ref elements must have @target. Warning: tei:div needs a correct @type. WARN: tei:div need a @type. WARN: tei:div need a @n. WARN: first text node within div is not within a heading - (tei:div usually has tei:head as first child). ERROR: elements must have @xml:id.