| article html file updated | 7 February 2020 09:38 CET | Update | https://www.mdpi.com/2227-7390/4/2/38 |
| article html file updated | 5 May 2019 13:56 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:27 CET | Update | N/A |
| article html file updated | 4 July 2016 06:21 CEST | Update | N/A |
| article html file updated | 2 June 2016 09:44 CEST | Original file | N/A |
| article xml uploaded. | 2 June 2016 09:43 CEST | Original file | https://www.mdpi.com/2227-7390/4/2/38/xml |
| article pdf uploaded. | 2 June 2016 09:43 CEST | Version of Record | https://www.mdpi.com/2227-7390/4/2/38/pdf |
