[seqfan] Need paper on 3x+1 problem.

[L. Edson Jeffery]

Does anyone know where I might find a downloadable version of the paper

Karl Heinz Metzger, Untersuchungen zum (3n+1)-Algorithmus, Teil II: Die
Konstruktion des Zahlenbaums, PM (Praxis der Mathematik in der Schule), 42
(2000)

and if there might be an English translation of it available somewhere?

Thanks for any help,

Ed Jeffery