**Acknowledgements**

We would like to thank our colleagues Dimeski, Bogdanovski, and Postalovski from North Macedonia for the many measurements we received from them. We also received measurements from the Croatian Geodetic Administration, although, these (regrettably) did not include measurements for the Petrinja earthquake.

We would also like to thank our colleague Željko Gulija, who introduced us to the colleagues from Macedonia.

We would also like to thank our colleagues from Sarajevo for their yearbook, which included information about and the measurements of the Kraljevo earthquake.

We would also like to thank Professor Eugen Prelogović for his advice on the analysis of measurements.

We would also like to thank Professor Walter Salazar for the corrections he made to our texts.
