@article{10_4153_CJM_1986_056_2,
     author = {Gr\"atzer, George and Lakser, Harry},
     title = {Homomorphisms of {Distributive} {Lattices} as {Restrictions} of {Congruences}},
     journal = {Canadian journal of mathematics},
     pages = {1122--1134},
     year = {1986},
     volume = {38},
     number = {5},
     doi = {10.4153/CJM-1986-056-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-056-2/}
}