| article html file updated | 8 February 2020 04:15 CET | Update | https://www.mdpi.com/2304-6775/5/2/9 |
| article html file updated | 24 September 2019 11:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 00:59 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:21 CEST | Update | N/A |
| article html file updated | 24 April 2017 08:21 CEST | Original file | N/A |
| article xml uploaded. | 24 April 2017 08:20 CEST | Original file | https://www.mdpi.com/2304-6775/5/2/9/xml |
| article pdf uploaded. | 24 April 2017 08:20 CEST | Version of Record | https://www.mdpi.com/2304-6775/5/2/9/pdf |
