{
  "annotation_id": "9af21d61-d916-47d3-b717-bb28b6126f0c",
  "date_created": "2026-03-02T18:00:57.103000Z",
  "date_modified": "2026-03-02T18:00:57.103000Z",
  "file_hash": "fc52b38fdac3d2d4f1ecacb871513bc1639c46a01168f18e48ea056bc9a6c6b1",
  "private": false,
  "record": {
    "abstract": "We analyze a database comprising quarterly sales of 55624 pharmaceutical\nproducts commercialized by 3939 pharmaceutical firms in the period 1992--2001.\nWe study the probability density function (PDF) of growth in firms and product\nsales and find that the width of the PDF of growth decays with the sales as a\npower law with exponent $\\beta = 0.20 \\pm 0.01$. We also find that the average\nsales of products scales with the firm sales as a power law with exponent\n$\\alpha = 0.57 \\pm 0.02$. And that the average number products of a firm scales\nwith the firm sales as a power law with exponent $\\gamma = 0.42 \\pm 0.02$. We\ncompare these findings with the predictions of models proposed till date on\ngrowth of business firms.",
    "arxiv_id": "physics/0502081",
    "authors": [
      "Kaushik Matia",
      "Dongfeng Fu",
      "Sergey V. Buldyrev",
      "Fabio Pammolli",
      "Massimo Riccaboni",
      "H. Eugene Stanley"
    ],
    "categories": [
      "physics.soc-ph",
      "q-fin.GN"
    ],
    "doi": "10.1209/epl/i2004-10070-4",
    "journal_ref": "Europhys Lett 67 (3): 498-503 (2004)",
    "title": "Statistical Properties of Business Firms Structure and Growth",
    "url": "https://arxiv.org/abs/physics/0502081"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "58a2ea81-66f5-44e9-bb4d-99ebae9d97a7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}