| article html file updated | 8 February 2020 00:23 CET | Update | https://www.mdpi.com/1999-4907/8/3/61 |
| article html file updated | 23 September 2019 13:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 09:10 CEST | Update | N/A |
| article html file updated | 28 March 2017 03:25 CEST | Update | N/A |
| article html file updated | 1 March 2017 06:42 CET | Original file | N/A |
| article xml uploaded. | 1 March 2017 06:41 CET | Original file | https://www.mdpi.com/1999-4907/8/3/61/xml |
| article pdf uploaded. | 1 March 2017 06:41 CET | Updated version of record | https://www.mdpi.com/1999-4907/8/3/61/pdf |
| article pdf uploaded. | 27 February 2017 11:19 CET | Version of Record | https://www.mdpi.com/1999-4907/8/3/61/pdf-vor |
