@article{JLT_2015_25_3_JLT_2015_25_3_a5,
     author = {E. Kizil and J. Lawson},
     title = {Lie {Semigroups,} {Homotopy,} and {Global} {Extensions} of {Local} {Homomorphisms}},
     journal = {Journal of Lie theory},
     pages = {753--774},
     year = {2015},
     volume = {25},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JLT_2015_25_3_JLT_2015_25_3_a5/}
}