| article html file updated | 7 February 2020 13:49 CET | Update | https://www.mdpi.com/2220-9964/5/9/149 |
| article html file updated | 5 May 2019 06:13 CEST | Update | N/A |
| article html file updated | 27 March 2019 14:38 CET | Update | N/A |
| article html file updated | 27 September 2016 09:36 CEST | Update | N/A |
| article html file updated | 24 August 2016 15:00 CEST | Original file | N/A |
| article xml uploaded. | 24 August 2016 14:59 CEST | Original file | https://www.mdpi.com/2220-9964/5/9/149/xml |
| article pdf uploaded. | 24 August 2016 14:59 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/9/149/pdf |
