1992/1996. [Commentary on Arts. 192-210 Swiss Code of Obligations - in German], in: Honsell/Vogt/Wiegand eds., Kommentar zum schweizerischen Privatrecht, Obligationenrecht I, Basel: Helbing & Lichtenhahn, 1st ed. (1992) [CISG 1046-1065, 1078, 1084, 1086, 1089, 1092-1093, 1096, 1102, 1107-1108]; 2d ed. (1996) [CISG 1106, 1124-1125, 1140, 1147, 1149, 1151, 1156, 1159, 1165, 1170-1171]