| article html file updated | 9 February 2020 04:53 CET | Update | https://www.mdpi.com/2227-9067/5/2/19 |
| article html file updated | 30 September 2019 08:40 CEST | Update | N/A |
| article html file updated | 1 May 2019 22:25 CEST | Update | N/A |
| article html file updated | 17 April 2019 21:07 CEST | Update | N/A |
| article html file updated | 28 March 2019 19:31 CET | Update | N/A |
| article html file updated | 14 March 2018 08:33 CET | Update | N/A |
| article html file updated | 30 January 2018 16:10 CET | Original file | N/A |
| article xml uploaded. | 30 January 2018 16:08 CET | Original file | https://www.mdpi.com/2227-9067/5/2/19/xml |
| article pdf uploaded. | 30 January 2018 16:08 CET | Updated version of record | https://www.mdpi.com/2227-9067/5/2/19/pdf |
| article pdf uploaded. | 30 January 2018 15:46 CET | Version of Record | N/A |
