Some relevant words used in articles of the International Code of Zoological Nomenclature (ICZN, 1999) are not defined by the glossary and it seems that there are different interpretations for them that may differ from common sense.
I'd like to ask how the scientific community defines words like "obtainable" (Art. 8.1.2) or "durable copies" (Art. 8.1.3) in regard to criteria that have to be met for considering a work as published under the provisions of the Code:
8.1. Criteria to be met. A work must satisfy the following criteria:
8.1.1. it must be issued for the purpose of providing a public and permanent scientific record,
8.1.2. it must be obtainable, when first issued, free of charge or by purchase, and
8.1.3. it must have been produced in an edition containing simultaneously obtainable copies by a method that assures numerous identical and durable copies.