| article html file updated | 7 February 2020 23:11 CET | Update | https://www.mdpi.com/2227-7390/5/1/12 |
| article html file updated | 23 September 2019 06:52 CEST | Update | - |
| article html file updated | 4 May 2019 11:38 CEST | Update | - |
| article html file updated | 30 March 2017 08:58 CEST | Update | - |
| article html file updated | 21 February 2017 03:49 CET | Original file | - |
| article xml uploaded. | 21 February 2017 03:48 CET | Original file | https://www.mdpi.com/2227-7390/5/1/12/xml |
| article pdf uploaded. | 21 February 2017 03:48 CET | Updated version of record | https://www.mdpi.com/2227-7390/5/1/12/pdf |
| article pdf uploaded. | 11 February 2017 09:46 CET | Version of Record | https://www.mdpi.com/2227-7390/5/1/12/pdf-vor |
