| article html file updated | 8 February 2020 20:40 CET | Update | https://www.mdpi.com/2227-9091/5/4/58 |
| article html file updated | 28 September 2019 08:01 CEST | Update | N/A |
| article html file updated | 2 May 2019 16:11 CEST | Update | N/A |
| article html file updated | 2 January 2018 14:27 CET | Update | N/A |
| article html file updated | 14 November 2017 10:35 CET | Original file | N/A |
| article xml uploaded. | 14 November 2017 10:34 CET | Update | https://www.mdpi.com/2227-9091/5/4/58/xml |
| article xml uploaded. | 14 November 2017 10:34 CET | Original file | N/A |
| article pdf uploaded. | 14 November 2017 10:34 CET | Updated version of record | https://www.mdpi.com/2227-9091/5/4/58/pdf |
| article pdf uploaded. | 8 November 2017 13:28 CET | Version of Record | https://www.mdpi.com/2227-9091/5/4/58/pdf-vor |
