Some problems in accessibility theory
Analyse des systèmes, Astérisque no. 75-76  (1980), p. 167-176 
@incollection{AST_1980__75-76__167_0,
     author = {Kupka, Ivan},
     title = {Some problems in accessibility theory},
     booktitle = {Analyse des syst\`emes},
     author = {Collectif},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {75-76},
     year = {1980},
     pages = {167-176},
     zbl = {0458.93004},
     mrnumber = {581713},
     language = {en},
     url = {http://www.numdam.org/item/AST_1980__75-76__167_0}
}

Kupka, Ivan. Some problems in accessibility theory, in Analyse des systèmes, Astérisque, no. 75-76 (1980), pp. 167-176. http://www.numdam.org/item/AST_1980__75-76__167_0/

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