| article html file updated | 8 February 2020 01:22 CET | Update | https://www.mdpi.com/2076-0760/6/1/28 |
| article html file updated | 23 September 2019 19:18 CEST | Update | N/A |
| article html file updated | 4 May 2019 06:56 CEST | Update | N/A |
| article html file updated | 14 March 2017 06:49 CET | Update | N/A |
| article html file updated | 14 March 2017 05:24 CET | Original file | N/A |
| article xml uploaded. | 14 March 2017 05:23 CET | Update | https://www.mdpi.com/2076-0760/6/1/28/xml |
| article pdf uploaded. | 13 March 2017 11:48 CET | Version of Record | https://www.mdpi.com/2076-0760/6/1/28/pdf |
