| article html file updated | 8 February 2020 03:19 CET | Update | https://www.mdpi.com/2227-7099/5/2/12 |
| article html file updated | 24 September 2019 06:16 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:43 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:23 CEST | Update | N/A |
| article html file updated | 13 April 2017 05:08 CEST | Update | N/A |
| article html file updated | 12 April 2017 07:50 CEST | Update | N/A |
| article html file updated | 11 April 2017 14:00 CEST | Original file | N/A |
| article xml uploaded. | 11 April 2017 13:59 CEST | Update | https://www.mdpi.com/2227-7099/5/2/12/xml |
| article pdf uploaded. | 11 April 2017 13:59 CEST | Version of Record | https://www.mdpi.com/2227-7099/5/2/12/pdf |
