TY - JOUR AU - Christian Carimalo TI - Transmutation of central forces and Bertrand's theorem JO - Theoretical and applied mechanics PY - 2023 SP - 1 VL - 50 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.2298/TAM220602001C/ DO - 10.2298/TAM220602001C LA - en ID - 10_2298_TAM220602001C ER -