TY - JOUR AU - V. Yu. Salamatova AU - Yu. V. Vassilevskii TI - On ellipticity of hyperelastic models based on experimental data JO - Contemporary Mathematics. Fundamental Directions PY - 2017 SP - 504 EP - 515 VL - 63 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2017_63_3_a7/ LA - ru ID - CMFD_2017_63_3_a7 ER -