| article html file updated | 8 February 2020 00:23 CET | Update | https://www.mdpi.com/2079-9721/5/1/8 |
| article html file updated | 23 September 2019 13:35 CEST | Update | N/A |
| article html file updated | 4 May 2019 09:09 CEST | Update | N/A |
| article html file updated | 1 March 2017 03:08 CET | Original file | N/A |
| article xml uploaded. | 1 March 2017 03:07 CET | Original file | https://www.mdpi.com/2079-9721/5/1/8/xml |
| article pdf uploaded. | 1 March 2017 03:07 CET | Updated version of record | https://www.mdpi.com/2079-9721/5/1/8/pdf |
| article pdf uploaded. | 27 February 2017 11:31 CET | Version of Record | https://www.mdpi.com/2079-9721/5/1/8/pdf-vor |
