Eb3-F3. Przybylska, Stefanie. The Double Reed 1/2 (October 1978): 12. For a D3 to Eb3 termination use the two fingerings below the trill fingering.

Eb3-F3:

      Db
tr tr o | o x o
   c# w  Bb

D3 termination:                             Eb3 termination:
    Db                        Db
x x o | o x o             x o x | o x o
  w    Bb                   w    Bb

Eb3-F3. Timm, Everett LeRoy. The Woodwinds; Performance and Instructional Techniques. Boston: Allyn and Bacon, 1964, p. 172.

tr tr o | o o o
  c# w
       D

tr o tr | o o o
    w
    D

tr o x | o o x
    w
    D

Heckel-System (German) Bassoon Trills and Shakes by Note Names