| article html file updated | 7 February 2020 10:54 CET | Update | https://www.mdpi.com/2227-7390/4/3/44 |
| article html file updated | 5 May 2019 11:36 CEST | Update | - |
| article html file updated | 27 March 2019 08:48 CET | Update | - |
| article html file updated | 28 September 2016 11:30 CEST | Update | - |
| article html file updated | 28 June 2016 11:50 CEST | Original file | - |
| article xml uploaded. | 28 June 2016 11:49 CEST | Original file | https://www.mdpi.com/2227-7390/4/3/44/xml |
| article pdf uploaded. | 28 June 2016 11:49 CEST | Version of Record | https://www.mdpi.com/2227-7390/4/3/44/pdf |
