@article{Day,
  author = {Day, Alan},
  interhash = {92f86651ec58d2172bc37610df3fff80},
  intrahash = {5bb10c218a6f0b7cc434a132264d3f79},
  journal = {Algebra Univ.},
  number = 1,
  pages = {153--162},
  title = {Splitting Algebras and a Weak Notion of Projectivity},
  volume = 5,
  year = 1975
}

@article{day1979characterizations,
  author = {Day, Alan},
  editor = {unknown},
  interhash = {7615e076b500ccc41926fefe2ae01f15},
  intrahash = {015c99bf1c8d247fbb0db3dc330002f6},
  journal = {Canadian Journal of Mathematics},
  pages = {69-78},
  title = {Characterizations of finite lattices that are bounded-homomorphic images of sublattices of free lattices },
  url = {http://cms.math.ca/cjm/v31/p69#},
  volume = 31,
  year = 1979
}