@article {1988, title = {Einstein algebras and the algebraic Kaluza-Klein monopole.}, journal = {Phys. Lett. B 210 (1988), no. 1-2, 68--72.}, number = {SISSA;7/88/FM}, year = {1988}, publisher = {SISSA Library}, doi = {10.1016/0370-2693(88)90351-6}, url = {http://hdl.handle.net/1963/603}, author = {Giovanni Landi and Giuseppe Marmo} }