From Jürgen:
ampersands in the bibliography (as in "Hartley & Marks" here)
need to be transferred to & in DocBook.
# that we want "&" rather than "and" (in APA context).
# see: https://www.mail-archive.com/search?l=mid&q=ildx4xd4o7ybeqroh3blxgnxqnsqnte256utip2fbmcwi4zolz%40wsh7ez36kkhl
export/templates/Articles/American_Psychological_Association_%28APA%29,_v._7_xhtml
+#
+# from Jürgen: ampersands in the bibliography (as in "Hartley & Marks" here)
+# need to be transferred to & in DocBook.
+export/examples/es/Handouts/Tufte_Handout_xhtml
# ==============================================================