;Volk, Katharina (Columbia University, New York),Zetzel, James E. G. (Columbia University, New York)
(1)
Gareth D. Williams (EDT)/ Katharina Volk (EDT)
(1)
Katharina Volk (EDT)/ Gareth D. Williams (EDT)
(1)
Robinson Ellis (EDT)/ Katharina Volk (INT)
(1)
Steven J. Green (EDT)/ Katharina Volk (EDT)
(1)
;Volk, Katharina (Columbia University, New York),Zetzel, James E. G. (Columbia University, New York)
(1)