Create CITATION.bib

CITATION.bib

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+@article{Heintzmann:23,
+author = {Rainer Heintzmann and Lars Loetgering and Felix Wechsler},
+journal = {Optica},
+keywords = {Fourier transforms; Inverse design; Phase retrieval; Spatial frequency; Synthetic aperture radar; Wave propagation},
+number = {11},
+pages = {1407--1416},
+publisher = {Optica Publishing Group},
+title = {Scalable angular spectrum propagation},
+volume = {10},
+month = {Nov},
+year = {2023},
+url = {https://opg.optica.org/optica/abstract.cfm?URI=optica-10-11-1407},
+doi = {10.1364/OPTICA.497809}
+}