@article{10_4064_cm115_1_10,
     author = {Arthur W. Apter},
     title = {Stationary reflection
 and level by level equivalence},
     journal = {Colloquium Mathematicum},
     pages = {113--128},
     publisher = {mathdoc},
     volume = {115},
     number = {1},
     year = {2009},
     doi = {10.4064/cm115-1-10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm115-1-10/}
}