| article html file updated | 7 February 2020 11:54 CET | Update | https://www.mdpi.com/2227-7390/4/3/49 |
| article html file updated | 5 May 2019 09:47 CEST | Update | - |
| article html file updated | 27 March 2019 10:40 CET | Update | - |
| article html file updated | 28 September 2016 11:31 CEST | Update | - |
| article html file updated | 19 July 2016 09:14 CEST | Original file | - |
| article xml uploaded. | 19 July 2016 09:13 CEST | Original file | https://www.mdpi.com/2227-7390/4/3/49/xml |
| article pdf uploaded. | 19 July 2016 09:13 CEST | Version of Record | https://www.mdpi.com/2227-7390/4/3/49/pdf |
