| article html file updated | 8 February 2020 19:23 CET | Update | https://www.mdpi.com/2304-6740/5/4/72 |
| article html file updated | 27 September 2019 23:52 CEST | Update | N/A |
| article html file updated | 2 May 2019 19:08 CEST | Update | N/A |
| article html file updated | 2 January 2018 13:52 CET | Update | N/A |
| article html file updated | 27 October 2017 03:30 CEST | Original file | N/A |
| article xml uploaded. | 27 October 2017 03:29 CEST | Original file | https://www.mdpi.com/2304-6740/5/4/72/xml |
| article pdf uploaded. | 27 October 2017 03:29 CEST | Updated version of record | https://www.mdpi.com/2304-6740/5/4/72/pdf |
| article pdf uploaded. | 25 October 2017 11:12 CEST | Version of Record | https://www.mdpi.com/2304-6740/5/4/72/pdf-vor |
