| article html file updated | 8 February 2020 20:06 CET | Update | https://www.mdpi.com/2312-7481/3/4/33 |
| article html file updated | 28 September 2019 04:15 CEST | Update | N/A |
| article html file updated | 2 May 2019 17:29 CEST | Update | N/A |
| article html file updated | 2 January 2018 14:23 CET | Update | N/A |
| article html file updated | 2 November 2017 09:27 CET | Original file | N/A |
| article xml uploaded. | 2 November 2017 09:26 CET | Original file | https://www.mdpi.com/2312-7481/3/4/33/xml |
| article pdf uploaded. | 2 November 2017 09:26 CET | Updated version of record | https://www.mdpi.com/2312-7481/3/4/33/pdf |
| article pdf uploaded. | 1 November 2017 12:32 CET | Version of Record | https://www.mdpi.com/2312-7481/3/4/33/pdf-vor |
