20.65 出版物方面出现差异主要是关于最佳做法准则和个案研究的出版物以及其他与可持续能源有关的出版物造成的，原因是各专家组的工作周期为两年。在周期的第一年完成分析工作，在周期的第二年编写出版物。
20.65 The variance in publications is driven mainly by publications on the best practices guidelines, case studies and other publications related to sustainable energy, owing to the two -year work cycles of the respective expert groups. In the first year of a cycle, the analytical work is completed, and in the second year of the cycle, the publications are prepared.