| article html file updated | 7 February 2020 15:37 CET | Update | https://www.mdpi.com/2218-6581/5/4/19 |
| article html file updated | 22 September 2019 01:44 CEST | Update | N/A |
| article html file updated | 5 May 2019 02:57 CEST | Update | N/A |
| article html file updated | 30 December 2016 06:03 CET | Update | N/A |
| article html file updated | 27 September 2016 13:10 CEST | Original file | N/A |
| article xml uploaded. | 27 September 2016 13:09 CEST | Update | https://www.mdpi.com/2218-6581/5/4/19/xml |
| article xml uploaded. | 27 September 2016 13:09 CEST | Update | N/A |
| article xml uploaded. | 27 September 2016 13:09 CEST | Original file | N/A |
| article pdf uploaded. | 27 September 2016 13:09 CEST | Version of Record | https://www.mdpi.com/2218-6581/5/4/19/pdf |
