| article html file updated | 7 February 2020 15:33 CET | Update | https://www.mdpi.com/2311-5521/1/4/31 |
| article html file updated | 22 September 2019 01:39 CEST | Update | N/A |
| article html file updated | 5 May 2019 03:05 CEST | Update | N/A |
| article html file updated | 27 October 2017 10:17 CEST | Update | N/A |
| article html file updated | 26 September 2016 12:03 CEST | Original file | N/A |
| article xml uploaded. | 26 September 2016 11:39 CEST | Update | https://www.mdpi.com/2311-5521/1/4/31/xml |
| article xml uploaded. | 26 September 2016 11:39 CEST | Original file | N/A |
| article pdf uploaded. | 26 September 2016 11:39 CEST | Version of Record | https://www.mdpi.com/2311-5521/1/4/31/pdf |
