On the relation between several notions of unconditional structure - A counterexample
Séminaire d'Analyse fonctionnelle (dit "Maurey-Schwartz") (1978-1979), Exposé no. 22, 10 p. 
@article{SAF_1978-1979____A19_0,
     author = {Schechtman, G.},
     title = {On the relation between several notions of unconditional structure - {A} counterexample},
     journal = {S\'eminaire d'Analyse fonctionnelle (dit "Maurey-Schwartz")},
     note = {talk:22},
     pages = {1--10},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1978-1979},
     mrnumber = {557375},
     zbl = {0414.46013},
     language = {en},
     url = {http://archive.numdam.org/item/SAF_1978-1979____A19_0/}
}
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Schechtman, G. On the relation between several notions of unconditional structure - A counterexample. Séminaire d'Analyse fonctionnelle (dit "Maurey-Schwartz") (1978-1979), Exposé no. 22, 10 p. http://archive.numdam.org/item/SAF_1978-1979____A19_0/

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