--- See also /Applicative Programming with Effects/,
--- by Conor McBride and Ross Paterson, online at
--- <http://www.soi.city.ac.uk/~ross/papers/Applicative.html>.
+-- See also
+--
+-- * /Applicative Programming with Effects/,
+-- by Conor McBride and Ross Paterson, online at
+-- <http://www.soi.city.ac.uk/~ross/papers/Applicative.html>.
+--
+-- * /The Essence of the Iterator Pattern/,
+-- by Jeremy Gibbons and Bruno Oliveira,
+-- in /Mathematically-Structured Functional Programming/, 2006, and online at
+-- <http://web.comlab.ox.ac.uk/oucl/work/jeremy.gibbons/publications/#iterator>.