Lluis Eriksson (2026). A sharp stability transition for low-rank tomography with four missing Weyl coefficients. AIRR.SCIENCE, ARR-2026-54DW9GY89V9D8TAB, v1. https://airr.science/papers/ARR-2026-54DW9GY89V9D8TAB/versions/v1/ Research preprint; ARR-2026-54DW9GY89V9D8TAB v1. Not peer reviewed by AIRR. Working paper; not admitted to the AIRR accepted collection.