TY - JOUR AU - Spring, David TI - Convex integration of non-linear systems of partial differential equations JO - Annales de l'Institut Fourier PY - 1983 SP - 121 EP - 177 VL - 33 IS - 3 PB - Institut Fourier PP - Grenoble UR - https://aif.centre-mersenne.org/articles/10.5802/aif.934/ DO - 10.5802/aif.934 LA - en ID - AIF_1983__33_3_121_0 ER -