| article html file updated | 11 September 2021 09:23 CEST | Update | https://www.mdpi.com/2220-9964/7/2/53 |
| article html file updated | 9 February 2020 05:46 CET | Update | N/A |
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| article xml uploaded. | 8 February 2018 08:23 CET | Update | https://www.mdpi.com/2220-9964/7/2/53/xml |
| article pdf uploaded. | 8 February 2018 08:23 CET | Updated version of record | https://www.mdpi.com/2220-9964/7/2/53/pdf |
| article html file updated | 7 February 2018 05:16 CET | Original file | N/A |
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| article pdf uploaded. | 7 February 2018 05:15 CET | Version of Record | https://www.mdpi.com/2220-9964/7/2/53/pdf-vor |
