@article{10_4153_CJM_1967_022_0,
     author = {Forelli, Frank},
     title = {Extreme {Points} in {H1(R)}},
     journal = {Canadian journal of mathematics},
     pages = {312--320},
     year = {1967},
     volume = {19},
     number = {1},
     doi = {10.4153/CJM-1967-022-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-022-0/}
}