| article html file updated | 7 February 2020 21:51 CET | Update | https://www.mdpi.com/2227-7390/5/1/8 |
| article html file updated | 22 September 2019 23:29 CEST | Update | - |
| article html file updated | 4 May 2019 14:21 CEST | Update | - |
| article html file updated | 30 March 2017 08:56 CEST | Update | - |
| article html file updated | 14 March 2017 06:38 CET | Update | - |
| article html file updated | 14 March 2017 04:26 CET | Original file | - |
| article xml uploaded. | 14 March 2017 04:25 CET | Original file | https://www.mdpi.com/2227-7390/5/1/8/xml |
| article pdf uploaded. | 14 March 2017 04:25 CET | Updated version of record | https://www.mdpi.com/2227-7390/5/1/8/pdf |
| article pdf uploaded. | 20 January 2017 12:31 CET | Version of Record | https://www.mdpi.com/2227-7390/5/1/8/pdf-vor |
