| article html file updated | 8 February 2020 03:23 CET | Update | https://www.mdpi.com/2079-6412/7/4/52 |
| article html file updated | 24 September 2019 06:36 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:37 CEST | Update | N/A |
| article html file updated | 28 April 2017 05:43 CEST | Update | N/A |
| article html file updated | 14 April 2017 04:14 CEST | Update | N/A |
| article xml uploaded. | 14 April 2017 04:12 CEST | Update | https://www.mdpi.com/2079-6412/7/4/52/xml |
| article pdf uploaded. | 14 April 2017 04:12 CEST | Updated version of record | https://www.mdpi.com/2079-6412/7/4/52/pdf |
| article html file updated | 11 April 2017 14:49 CEST | Original file | N/A |
| article pdf uploaded. | 11 April 2017 14:48 CEST | Version of Record | https://www.mdpi.com/2079-6412/7/4/52/pdf-vor |
