| article html file updated | 8 February 2020 01:57 CET | Update | https://www.mdpi.com/2227-9091/5/1/20 |
| article html file updated | 23 September 2019 22:44 CEST | Update | N/A |
| article html file updated | 4 May 2019 05:38 CEST | Update | N/A |
| article html file updated | 29 March 2017 05:57 CEST | Update | N/A |
| article html file updated | 27 March 2017 05:23 CEST | Update | N/A |
| article html file updated | 24 March 2017 07:00 CET | Update | N/A |
| article html file updated | 22 March 2017 09:43 CET | Original file | N/A |
| article xml uploaded. | 22 March 2017 09:42 CET | Original file | https://www.mdpi.com/2227-9091/5/1/20/xml |
| article pdf uploaded. | 22 March 2017 09:42 CET | Version of Record | https://www.mdpi.com/2227-9091/5/1/20/pdf |
