108 (liczba) (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "108 (liczba)" in Polish language version.

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1journalofscientificexploration.org

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doi.org

dx.doi.org

Philip RobertP.R. Brown Philip RobertP.R., Mysticism and the Fine Structure Constant, „Journal of Scientific Exploration”, 34 (3), 2020, s. 470, DOI: 10.31275/20201289, ISSN 0892-3310 [dostęp 2023-01-15] .

journalofscientificexploration.org

Philip RobertP.R. Brown Philip RobertP.R., Mysticism and the Fine Structure Constant, „Journal of Scientific Exploration”, 34 (3), 2020, s. 470, DOI: 10.31275/20201289, ISSN 0892-3310 [dostęp 2023-01-15] .

oeis.org

Niven (or Harshad) numbers: numbers that are divisible by the sum of their digits.. The On-Line Encyclopedia of Integer Sequences. [dostęp 2017-03-21]. (ang.).
Practical numbers: positive integers n such that every k ⇐ sigma(n) is a sum of distinct divisors of n. Also called panarithmic numbers.. The On-Line Encyclopedia of Integer Sequences. [dostęp 2017-03-21]. (ang.).
Powerful numbers, definition (1): if a prime p divides n then p^2 must also divide n (also called squareful, square full, square-full or 2-full numbers)... The On-Line Encyclopedia of Integer Sequences. [dostęp 2017-03-21]. (ang.).

worldcat.org

Philip RobertP.R. Brown Philip RobertP.R., Mysticism and the Fine Structure Constant, „Journal of Scientific Exploration”, 34 (3), 2020, s. 470, DOI: 10.31275/20201289, ISSN 0892-3310 [dostęp 2023-01-15] .