TY - JOUR AU - Duff, Dusa Mc TI - Applications of convex integration to symplectic and contact geometry JO - Annales de l'Institut Fourier PY - 1987 SP - 107 EP - 133 VL - 37 IS - 1 PB - Institut Fourier PP - Grenoble UR - https://aif.centre-mersenne.org/articles/10.5802/aif.1079/ DO - 10.5802/aif.1079 LA - en ID - AIF_1987__37_1_107_0 ER -