| article html file updated | 7 February 2020 09:52 CET | Update | https://www.mdpi.com/2076-3921/5/2/18 |
| article html file updated | 21 September 2019 18:38 CEST | Update | N/A |
| article html file updated | 5 May 2019 13:31 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:55 CET | Update | N/A |
| article html file updated | 4 July 2016 06:23 CEST | Update | N/A |
| article html file updated | 7 June 2016 12:29 CEST | Original file | N/A |
| article xml uploaded. | 7 June 2016 12:28 CEST | Original file | https://www.mdpi.com/2076-3921/5/2/18/xml |
| article pdf uploaded. | 7 June 2016 12:28 CEST | Version of Record | https://www.mdpi.com/2076-3921/5/2/18/pdf |
