| article html file updated | 7 February 2020 07:46 CET | Update | https://www.mdpi.com/2313-0105/2/2/13 |
| article html file updated | 5 May 2019 17:36 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:56 CET | Update | N/A |
| article html file updated | 12 May 2016 05:13 CEST | Original file | N/A |
| article xml uploaded. | 12 May 2016 05:11 CEST | Update | https://www.mdpi.com/2313-0105/2/2/13/xml |
| article pdf uploaded. | 12 May 2016 05:11 CEST | Updated version of record | https://www.mdpi.com/2313-0105/2/2/13/pdf |
| article pdf uploaded. | 26 April 2016 08:30 CEST | Version of Record | https://www.mdpi.com/2313-0105/2/2/13/pdf-vor |
