From the network in Figure 9, the co-citation diploma on the literature on slices for every period of time were integrated and clustered. The integrated network consisted of 821 literatures and 2332 inbound links to sort a co-citation network cluster. A co-citation network diagram based on a photovoltaic building program https://rowanolhbw.shotblogs.com/the-basic-principles-of-bipv-manufacturer-45844042