@phdthesis(BergerPhd,
 author       = "Robert Berger",
 year         = "1964",
 title        = "{The Undecidability of the Domino Problem}",
 school       = "Harvard University",
)
@article(Du,
 author       = "Bruno Durand",
 year         = "1999",
 title        = "{Tilings and Quasiperiodicity}",
 journal      = "Theoretical Computer Science",
 volume       = "221",
 number       = "1-2",
 pages        = "61--75",
 doi          = "10.1016/S0304-3975(99)00027-4",
)
@article(Culik,
 author       = "Karel Culik II",
 year         = "1996",
 title        = "{An aperiodic set of 13 Wang tiles}",
 journal      = "Discrete Mathematics",
 volume       = "160",
 pages        = "245--251",
 doi          = "10.1016/S0012-365X(96)00118-5",
)
@article(Kari14,
 author       = "Jarkko Kari",
 year         = "1996",
 title        = "{A small aperiodic set of Wang tiles}",
 journal      = "Discrete Mathematics",
 volume       = "160",
 pages        = "259--264",
 doi          = "10.1016/0012-365X(95)00120-L",
)
@inproceedings(OllingerPolyo,
 author       = "Nicolas Ollinger",
 year         = "2009",
 title        = "{Tiling the Plane with a Fixed Number of Polyominoes}",
 booktitle    = "Proceedings of the Third International Conference on Language and Automata Theory and Applications (LATA)",
 series       = "LNCS",
 volume       = "5457",
 pages        = "638--647",
 doi          = "10.1007/978-3-642-00982-2\_54",
)
@article(wangpatternrecoII,
 author       = "Hao Wang",
 year         = "1961",
 title        = "{Proving theorems by Pattern Recognition II}",
 journal      = "Bell Systems technical journal",
 volume       = "40",
 pages        = "1--41",
)