| article html file updated | 8 February 2020 07:15 CET | Update | https://www.mdpi.com/2079-9292/6/2/44 |
| article html file updated | 25 September 2019 03:06 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:24 CEST | Update | N/A |
| article html file updated | 28 June 2017 13:03 CEST | Update | N/A |
| article html file updated | 6 June 2017 10:42 CEST | Original file | N/A |
| article xml uploaded. | 6 June 2017 10:41 CEST | Original file | https://www.mdpi.com/2079-9292/6/2/44/xml |
| article pdf uploaded. | 6 June 2017 10:41 CEST | Updated version of record | https://www.mdpi.com/2079-9292/6/2/44/pdf |
| article pdf uploaded. | 1 June 2017 15:14 CEST | Version of Record | https://www.mdpi.com/2079-9292/6/2/44/pdf-vor |
