![](https://media.springernature.com/w110h61/springer-static/image/art%3A10.1007%2Fs42461-021-00530-8/MediaObjects/42461_2021_530_Figa_HTML.png?as=webp)
![](https://media.springernature.com/w90/springer-static/cover/journal/42461/39/1.jpg?as=webp)
Volume 39, Issue 1
February 2022Special Focus Issue in Memory of Emeritus Professor Frank F. Aplan
18 articles in this issue
Special Focus Issue in Memory of Emeritus Professor Frank F. Aplan