@article{701385,
     title = {Two supergeometries from fourfold gradings of superalgebras},
     booktitle = {Proceedings of the Winter School "Geometry and Physics"},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1985},
     pages = {[11]-19},
     mrnumber = {MR0853126},
     zbl = {0599.53065},
     url = {http://dml.mathdoc.fr/item/701385}
}

Lukierski, Jerzy. Two supergeometries from fourfold gradings of superalgebras, dans Proceedings of the Winter School "Geometry and Physics", GDML_Books,  (1985), pp. [11]-19. http://gdmltest.u-ga.fr/item/701385/