Physikalische Dimensionen in Ada. - Christoph Grein (Softwaretechnik-Trends, 2002)

A Survey of Physical Unit Handling Techniques in Ada. - Christoph Grein; Dmitry A. Kazakov; Fraser Wilson (Ada-Europe, 2003)

Ada Magica. - Christoph Grein (Softwaretechnik-Trends, 2003)