none Decision not to apply GRI principles or protocols in the preparation of the report Criteria/definitions used in any accounting for economic, environmental, and social costs and benefits 2.18 Annual report 2005 Significant changes from previous years in the measurement methods apllied to key economic, environmental, and social information 2.19 Annual report 2005 Policies and internal practices to enhances and provide assurance about the accuracy, completeness, and reliability that can be placed on the sustainability report 2.20 Provided among others by Environmental Controlling and EMAS.