| article html file updated | 7 February 2020 23:09 CET | Update | https://www.mdpi.com/2075-4701/7/2/54 |
| article html file updated | 23 September 2019 06:40 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:43 CEST | Update | N/A |
| article html file updated | 1 March 2017 03:53 CET | Update | N/A |
| article html file updated | 13 February 2017 04:09 CET | Original file | N/A |
| article xml uploaded. | 13 February 2017 04:08 CET | Original file | https://www.mdpi.com/2075-4701/7/2/54/xml |
| article pdf uploaded. | 13 February 2017 04:08 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/2/54/pdf |
| article pdf uploaded. | 10 February 2017 17:46 CET | Version of Record | https://www.mdpi.com/2075-4701/7/2/54/pdf-vor |
