| article html file updated | 7 February 2020 23:27 CET | Update | https://www.mdpi.com/1999-4907/8/2/44 |
| article html file updated | 23 September 2019 08:18 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:07 CEST | Update | N/A |
| article html file updated | 28 February 2017 10:56 CET | Update | N/A |
| article html file updated | 20 February 2017 02:43 CET | Original file | N/A |
| article xml uploaded. | 20 February 2017 02:42 CET | Update | https://www.mdpi.com/1999-4907/8/2/44/xml |
| article xml uploaded. | 20 February 2017 02:42 CET | Original file | N/A |
| article pdf uploaded. | 20 February 2017 02:42 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/2/44/pdf |
| article pdf uploaded. | 15 February 2017 11:02 CET | Version of Record | https://www.mdpi.com/1999-4907/8/2/44/pdf-vor |
