@article{10_1023_A_1013744008028,
     author = {Pr\'ager, Milan},
     title = {Eigenvalues and eigenfunctions of the {Laplace} operator on an equilateral triangle for the discrete case},
     journal = {Applications of Mathematics},
     pages = {231--239},
     publisher = {mathdoc},
     volume = {46},
     number = {3},
     year = {2001},
     doi = {10.1023/A:1013744008028},
     mrnumber = {1828307},
     zbl = {1059.65101},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1023/A:1013744008028/}
}