| article html file updated | 8 February 2020 00:41 CET | Update | https://www.mdpi.com/2227-7102/7/1/37 |
| article html file updated | 23 September 2019 15:19 CEST | Update | - |
| article html file updated | 4 May 2019 08:27 CEST | Update | - |
| article html file updated | 27 October 2017 09:56 CEST | Update | - |
| article html file updated | 6 March 2017 08:28 CET | Original file | - |
| article xml uploaded. | 6 March 2017 08:27 CET | Original file | https://www.mdpi.com/2227-7102/7/1/37/xml |
| article pdf uploaded. | 6 March 2017 08:27 CET | Updated version of record | https://www.mdpi.com/2227-7102/7/1/37/pdf |
| article pdf uploaded. | 3 March 2017 10:45 CET | Version of Record | https://www.mdpi.com/2227-7102/7/1/37/pdf-vor |
