TY - JOUR T1 - Lie algebra extensions and abelian monopoles. JF - Phys. Lett. B 195 (1987), no. 3, 429-434 Y1 - 1987 A1 - Giovanni Landi A1 - Giuseppe Marmo PB - SISSA Library UR - http://hdl.handle.net/1963/506 U1 - 3398 U2 - Mathematics U3 - Mathematical Physics ER -