@article{10_26493_1855_3974_162_a7f,
     author = {Svjetlan Fereti\'c},
     title = {
		{Polyominoes} with nearly convex columns: {A} semi-directed model
	},
     journal = {Ars Mathematica Contemporanea},
     pages = {107--126},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2012},
     doi = {10.26493/1855-3974.162.a7f},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.162.a7f/}
}