@article{JOLT_2010_20_3_a6,
     author = {Mark R. Sepanski and Ronald J. Stanke},
     title = {Global {Lie} {Symmetries} of the {Heat} and {Schr\"odinger} {Equation}},
     journal = {Journal of Lie Theory},
     pages = {543--580},
     year = {2010},
     volume = {20},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2010_20_3_a6/}
}