| article html file updated | 9 February 2020 03:57 CET | Update | https://www.mdpi.com/2227-7390/6/2/15 |
| article html file updated | 30 September 2019 03:14 CEST | Update | - |
| article html file updated | 2 May 2019 00:23 CEST | Update | - |
| article html file updated | 17 April 2019 22:50 CEST | Update | - |
| article html file updated | 28 March 2019 17:32 CET | Update | - |
| article html file updated | 14 March 2018 10:02 CET | Update | - |
| article html file updated | 23 January 2018 08:14 CET | Update | - |
| article xml uploaded. | 23 January 2018 08:13 CET | Update | https://www.mdpi.com/2227-7390/6/2/15/xml |
| article html file updated | 23 January 2018 04:46 CET | Original file | - |
| article xml uploaded. | 23 January 2018 04:45 CET | Update | - |
| article xml uploaded. | 23 January 2018 04:45 CET | Update | - |
| article xml uploaded. | 23 January 2018 04:45 CET | Original file | - |
| article pdf uploaded. | 23 January 2018 04:45 CET | Version of Record | https://www.mdpi.com/2227-7390/6/2/15/pdf |
