| article html file updated | 9 February 2020 04:47 CET | Update | https://www.mdpi.com/1999-4907/9/2/68 |
| article html file updated | 30 September 2019 08:09 CEST | Update | N/A |
| article html file updated | 1 May 2019 22:37 CEST | Update | N/A |
| article html file updated | 17 April 2019 21:18 CEST | Update | N/A |
| article html file updated | 28 March 2019 19:19 CET | Update | N/A |
| article html file updated | 14 March 2018 09:26 CET | Update | N/A |
| article html file updated | 29 January 2018 18:00 CET | Original file | N/A |
| article xml uploaded. | 29 January 2018 17:58 CET | Update | https://www.mdpi.com/1999-4907/9/2/68/xml |
| article xml uploaded. | 29 January 2018 17:58 CET | Original file | N/A |
| article pdf uploaded. | 29 January 2018 17:58 CET | Version of Record | https://www.mdpi.com/1999-4907/9/2/68/pdf |
