| article html file updated | 9 February 2020 06:57 CET | Update | https://www.mdpi.com/2075-5309/8/2/33 |
| article html file updated | 30 September 2019 21:10 CEST | Update | - |
| article html file updated | 1 May 2019 17:46 CEST | Update | - |
| article html file updated | 17 April 2019 17:06 CEST | Update | - |
| article html file updated | 28 March 2019 23:59 CET | Update | - |
| article html file updated | 14 March 2018 11:21 CET | Update | - |
| article html file updated | 23 February 2018 09:08 CET | Original file | - |
| article xml uploaded. | 23 February 2018 09:07 CET | Original file | https://www.mdpi.com/2075-5309/8/2/33/xml |
| article pdf uploaded. | 23 February 2018 09:07 CET | Updated version of record | https://www.mdpi.com/2075-5309/8/2/33/pdf |
| article pdf uploaded. | 17 February 2018 06:09 CET | Version of Record | https://www.mdpi.com/2075-5309/8/2/33/pdf-vor |
