TY  - JOUR
AU  - Barbara Alfawicka
TI  - Inverse problems connected with periods of oscillations described by ẍ + g(x) = 0
JO  - Annales Polonici Mathematici
PY  - 1984
SP  - 297
EP  - 308
VL  - 44
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-44-3-297-308/
DO  - 10.4064/ap-44-3-297-308
LA  - en
ID  - 10_4064_ap_44_3_297_308
ER  -