Faustmann does not appear in Bohm Bawerk or Roscher whereas Thunen of
course does.

JB Clark does mention Thunen
http://www.econlib.org/library/Clark/clkDW21.html#n44
(even though paradoxically he gets it wrong as Niehans observes (Palgrave
entry on v. Thunen) (sour grapes I presume about marginal productivity.
Precursor, precursor on the wall who is the first of them all)

I find amusing to compare Faustmann's DCF method with Petty's three
generations average in comparing usufruct with fees simple of land.

Nicholas Theocarakis