1991. Der Weg zur deutschen Rechtseinheit [papers - among others - by Enderlein, Reinhart; contributions to the discussion by Dannemann, Drobnig, Jayme, Lorenz, Otto - in German], Heidelberg: C.F. Müller (1991) 65-98 [CISG, Limitation Convention], 344-355 [Limitation Convention, Protocol 1980 - in German]