| article html file updated | 8 February 2020 04:04 CET | Update | https://www.mdpi.com/2073-8994/9/4/58 |
| article html file updated | 4 May 2019 01:18 CEST | Update | N/A |
| article html file updated | 28 April 2017 07:16 CEST | Update | N/A |
| article html file updated | 24 April 2017 05:40 CEST | Update | N/A |
| article xml uploaded. | 24 April 2017 05:39 CEST | Update | https://www.mdpi.com/2073-8994/9/4/58/xml |
| article pdf uploaded. | 24 April 2017 05:39 CEST | Updated version of record | https://www.mdpi.com/2073-8994/9/4/58/pdf |
| article html file updated | 21 April 2017 09:06 CEST | Original file | N/A |
| article pdf uploaded. | 21 April 2017 09:05 CEST | Version of Record | https://www.mdpi.com/2073-8994/9/4/58/pdf-vor |
