| article html file updated | 7 February 2020 05:21 CET | Update | https://www.mdpi.com/2227-7390/4/1/12 |
| article html file updated | 5 May 2019 22:37 CEST | Update | - |
| article html file updated | 26 March 2019 22:23 CET | Update | - |
| article html file updated | 29 March 2016 07:21 CEST | Original file | - |
| article pdf uploaded. | 3 March 2016 09:06 CET | Version of Record | https://www.mdpi.com/2227-7390/4/1/12/pdf |
| article xml uploaded. | 3 March 2016 09:06 CET | Original file | https://www.mdpi.com/2227-7390/4/1/12/xml |
