TY - JOUR AU - Tsuboi, Takashi TI - On 2-cycles of $B~{\rm Diff}(S^1)$ which are represented by foliated $S^1$-bundles over $T^2$ JO - Annales de l'Institut Fourier PY - 1981 DA - 1981/// SP - 1 EP - 59 VL - 31 IS - 2 PB - Institut Fourier UR - http://archive.numdam.org/articles/10.5802/aif.828/ UR - https://zbmath.org/?q=an%3A0439.57018 UR - https://www.ams.org/mathscinet-getitem?mr=84b:57019 UR - https://doi.org/10.5802/aif.828 DO - 10.5802/aif.828 LA - en ID - AIF_1981__31_2_1_0 ER -