The two-square lemma.
Fay, Temple H. ; Hardie, Keith A. ; Hilton, Peter J.
Publicacions Matemàtiques, Tome 33 (1989), p. 133-137 / Harvested from Biblioteca Digital de Matemáticas
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A new proof is given of the connecting homomorphism.

Publié le : 1989-01-01
DMLE-ID : 3629 
@article{urn:eudml:doc:41072,
     title = {The two-square lemma.},
     journal = {Publicacions Matem\`atiques},
     volume = {33},
     year = {1989},
     pages = {133-137},
     zbl = {0699.18003},
     mrnumber = {MR1004230},
     language = {en},
     url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41072}
}

Fay, Temple H.; Hardie, Keith A.; Hilton, Peter J. The two-square lemma.. Publicacions Matemàtiques, Tome 33 (1989) pp. 133-137. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41072/