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Expansion and contraction of variable rank coals during the exchange sorption of $CO_{2}$ and $CH_{4}$ / Grażyna CEGLARSKA-STEFAŃSKA, Katarzyna ZARĘBSKA // Adsorption Science & Technology ; ISSN 0263-6174. — 2002 vol. 20 no. 1, s. 49–62. — Bibliogr. s. 62, Abstr.. — tekst: https://journals-1sagepub-1com-10b6yqi4z01ae.wbg2.bg.agh.edu.pl/doi/pdf/10.1260/026361702760120926

The competitive sorption of $CO_{2}$ and $CH_{4}$ with regard to the release of methane from coal / Grażyna CEGLARSKA-STEFAŃSKA, Katarzyna ZARĘBSKA // Fuel Processing Technology ; ISSN 0378-3820. — 2002 vols. 77–78 spec. iss., s. 423–429. — Bibliogr. s. 429, Abstr.. — Publikacja dostępna online od: 2002-05-14. — 4th [Fourth] international symposium on Structure and reactivity of carbonaceous materials (Coal Structure 2002) / eds. A. M.  Mastral [et al.]. — Amsterdam [etc.] : Elsevier, 2002. — tekst: https://www-1sciencedirect-1com-1000027pp0020.wbg2.bg.agh.edu.pl/science/article/pii/S0378382002000930/pdfft?md5=665408e38fea5d2e9476856eb6fa3f69&pid=1-s2.0-S0378382002000930-main.pdf