| article html file updated | 7 February 2020 21:22 CET | Update | https://www.mdpi.com/2225-1154/5/1/4 |
| article html file updated | 22 September 2019 20:50 CEST | Update | N/A |
| article html file updated | 4 May 2019 15:31 CEST | Update | N/A |
| article html file updated | 29 March 2017 10:15 CEST | Update | N/A |
| article html file updated | 13 January 2017 04:08 CET | Original file | N/A |
| article xml uploaded. | 13 January 2017 04:07 CET | Update | https://www.mdpi.com/2225-1154/5/1/4/xml |
| article xml uploaded. | 13 January 2017 04:07 CET | Original file | N/A |
| article pdf uploaded. | 13 January 2017 04:07 CET | Version of Record | https://www.mdpi.com/2225-1154/5/1/4/pdf |
