@article{10_4064_am_13_4_559_562,
     author = {G. Trybu\'s},
     title = {Algorithm 28. {Calculating} the measure of economic maturity},
     journal = {Applicationes Mathematicae},
     pages = {559--562},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {1972},
     doi = {10.4064/am-13-4-559-562},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-13-4-559-562/}
}