Cerstin Mahlow (EDT)/ Michael Piotrowski (EDT)
(3)
Piotr Piotrowski/ Anna Brzyski (TRN)
(3)
Nancy A. Piotrowski (EDT)
(2)
Suzanne J. Piotrowski (EDT)
(2)
Andrzej Piotrowski (EDT)/ Julia Williams Robinson (EDT)
(1)
Edited by Magnus Wennerhag, Christian Fröhlich and Grzegorz Piotrowski
(1)