TY - JOUR AU - Zofia Wróblewska TI - Approximate solutions and numerical analysis of a spring-mass running model JO - Mathematica Applicanda PY - 2020 SP - 25 EP - 48 VL - 48 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14708/ma.v48i1.6507/ DO - 10.14708/ma.v48i1.6507 LA - pl ID - 10_14708_ma_v48i1_6507 ER -