@article{10_4064_ap_27_2_129_131,
     author = {Shigeru Haruki},
     title = {A note on a pentomino functional equation},
     journal = {Annales Polonici Mathematici},
     pages = {129--131},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1972},
     doi = {10.4064/ap-27-2-129-131},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-27-2-129-131/}
}