| article html file updated | 8 February 2020 00:50 CET | Update | https://www.mdpi.com/2227-7102/7/1/38 |
| article html file updated | 4 May 2019 08:05 CEST | Update | - |
| article html file updated | 27 October 2017 09:56 CEST | Update | - |
| article html file updated | 8 March 2017 14:42 CET | Original file | - |
| article xml uploaded. | 8 March 2017 14:41 CET | Original file | https://www.mdpi.com/2227-7102/7/1/38/xml |
| article pdf uploaded. | 8 March 2017 14:41 CET | Updated version of record | https://www.mdpi.com/2227-7102/7/1/38/pdf |
| article pdf uploaded. | 6 March 2017 09:33 CET | Version of Record | https://www.mdpi.com/2227-7102/7/1/38/pdf-vor |
