| article html file updated | 9 February 2020 20:40 CET | Update | https://www.mdpi.com/2226-4787/6/2/52 |
| article html file updated | 4 October 2019 09:17 CEST | Update | N/A |
| article html file updated | 30 April 2019 12:52 CEST | Update | N/A |
| article html file updated | 16 April 2019 13:32 CEST | Update | N/A |
| article html file updated | 16 April 2019 07:54 CEST | Update | N/A |
| article html file updated | 30 March 2019 08:43 CET | Update | N/A |
| article html file updated | 27 June 2018 09:31 CEST | Update | N/A |
| article html file updated | 8 June 2018 07:47 CEST | Update | N/A |
| article pdf uploaded. | 8 June 2018 07:46 CEST | Updated version of record | https://www.mdpi.com/2226-4787/6/2/52/pdf |
| article xml uploaded. | 8 June 2018 07:46 CEST | Update | https://www.mdpi.com/2226-4787/6/2/52/xml |
| article xml file uploaded | 8 June 2018 07:46 CEST | Update | N/A |
| article html file updated | 7 June 2018 13:43 CEST | Original file | N/A |
| article pdf uploaded. | 7 June 2018 13:42 CEST | Version of Record | https://www.mdpi.com/2226-4787/6/2/52/pdf-vor |
| article xml file uploaded | 7 June 2018 13:42 CEST | Original file | N/A |