| article html file updated | 9 February 2020 05:15 CET | Update | https://www.mdpi.com/2076-3271/6/1/9 |
| article html file updated | 1 May 2019 21:36 CEST | Update | N/A |
| article html file updated | 17 April 2019 20:26 CEST | Update | N/A |
| article html file updated | 28 March 2019 20:19 CET | Update | N/A |
| article html file updated | 28 March 2018 10:21 CEST | Update | N/A |
| article html file updated | 2 February 2018 06:55 CET | Original file | N/A |
| article xml uploaded. | 2 February 2018 06:53 CET | Update | https://www.mdpi.com/2076-3271/6/1/9/xml |
| article xml uploaded. | 2 February 2018 03:06 CET | Original file | N/A |
| article pdf uploaded. | 2 February 2018 03:06 CET | Version of Record | https://www.mdpi.com/2076-3271/6/1/9/pdf |
