@article{UFA_2013_5_3_a5,
     author = {A. M. Ilyasov},
     title = {Optimal system of {Lie} algebra subalgebras of the point symmetries group for nonlinear heat equation without source},
     journal = {Ufa mathematical journal},
     pages = {53--66},
     year = {2013},
     volume = {5},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2013_5_3_a5/}
}