| article html file updated | 8 February 2020 07:31 CET | Update | https://www.mdpi.com/2075-5309/7/2/47 |
| article html file updated | 25 September 2019 04:30 CEST | Update | N/A |
| article html file updated | 3 May 2019 18:52 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:48 CEST | Update | N/A |
| article html file updated | 6 June 2017 08:13 CEST | Update | N/A |
| article xml uploaded. | 6 June 2017 08:12 CEST | Update | https://www.mdpi.com/2075-5309/7/2/47/xml |
| article pdf uploaded. | 6 June 2017 08:12 CEST | Updated version of record | https://www.mdpi.com/2075-5309/7/2/47/pdf |
| article html file updated | 5 June 2017 14:50 CEST | Original file | N/A |
| article pdf uploaded. | 5 June 2017 14:48 CEST | Version of Record | https://www.mdpi.com/2075-5309/7/2/47/pdf-vor |
