@article{10_5427_jsing_2020_20p,
     author = {Vadim Schechtman and Alexander Varchenko},
     title = {Positive {Populations}},
     journal = {Journal of Singularities},
     pages = {342--370},
     publisher = {mathdoc},
     volume = {20},
     year = {2020},
     doi = {10.5427/jsing.2020.20p},
     url = {http://geodesic.mathdoc.fr/articles/10.5427/jsing.2020.20p/}
}