| article html file updated | 8 February 2020 08:02 CET | Update | https://www.mdpi.com/2079-9721/5/2/15 |
| article html file updated | 25 September 2019 07:07 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:55 CEST | Update | N/A |
| article html file updated | 13 June 2017 05:17 CEST | Original file | N/A |
| article xml uploaded. | 13 June 2017 05:16 CEST | Original file | https://www.mdpi.com/2079-9721/5/2/15/xml |
| article pdf uploaded. | 13 June 2017 05:16 CEST | Updated version of record | https://www.mdpi.com/2079-9721/5/2/15/pdf |
| article pdf uploaded. | 11 June 2017 11:32 CEST | Version of Record | https://www.mdpi.com/2079-9721/5/2/15/pdf-vor |
