01084nam a2200289 i 450099100140218970753620020507192822.0990113s1968 de ||| | fre b10842664-39ule_instLE01311741ExLDip.to Matematicaeng514.3AMS 57R99Cerf, Jean348814Sur les difféomorphismes de la sphère de dimension trois (r̂4=0) /Jean CerfBerlin ; Heidelberg ; New York :Springer-Verlag,1968xii, 133 p. ;28 cm.Lecture notes in mathematics,0075-8434 ;53Differential topologyHomology theoryHomotopy theory.b1084266423-02-1728-06-02991001402189707536LE013 57R CER11 (1968)12013000107134le013-E0.00-l- 03030.i1095282228-06-02Sur les difféomorphismes de la sphère de dimension trois (r̂4=0918865UNISALENTOle01301-01-99ma -frede 01