Geodesic
An example of two non-isomorphic finite subdirectly irreducible bands generating the same variety of bands.
Semigroup forum, Tome 4 (1972), pp. 365-366.

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@article{SF_1972__4_133918,
     author = {B.M. Schein},
     title = {An example of two non-isomorphic finite subdirectly irreducible bands  generating the same variety of bands.},
     journal = {Semigroup forum},
     pages = {365--366},
     publisher = {mathdoc},
     volume = {4},
     year = {1972},
     zbl = {0261.20049},
     url = {http://geodesic.mathdoc.fr/item/SF_1972__4_133918/}
}
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B.M. Schein. An example of two non-isomorphic finite subdirectly irreducible bands  generating the same variety of bands.. Semigroup forum, Tome 4 (1972), pp. 365-366. http://geodesic.mathdoc.fr/item/SF_1972__4_133918/