Calcium minerals and late-stage Ca-metasomatism in the Julianna pegmatitic system Góry Sowie Block, SW Poland / Adam PIECZKA, Adam Szuszkiewicz, Eligiusz Szełęg, Krzysztof Nejbert // The Canadian Mineralogist ; ISSN 0008-4476. — 2019 vol. 57 no. 5, s. 775-777. — Bibliogr. s. 777. — tekst: https://pubs.geoscienceworld.org/canmin/article-pdf/57/5/775/4851196/i1499-1276-57-5-775.pdf

First occurrence of Mn-dominant cordierite-group mineral: electron microprobe and laser ablation ICP-MS study / Adam Szuszkiewicz, Adam PIECZKA, Petr Gadas, Michaela Vašinová-Galiová, Eligiusz Szełęg, Bożena GOŁĘBIOWSKA, Dagmar Galusková // The Canadian Mineralogist ; ISSN 0008-4476. — 2019 vol. 57 no. 5, s. 807–810. — Bibliogr. s. 810. — tekst: https://pubs.geoscienceworld.org/canmin/article-pdf/57/5/807/4851225/i1499-1276-57-5-807.pdf

Lepageite, $Mn_{3}^{2+}(Fe_{7}^{3+}Fe_{4}^{2+})O_{3}[Sb_{5}^{3+}As_{8}^{3+}O_{34}]$, a new arsenite-antimonite mineral from the Szklary pegmatite, Lower Silesia, Poland / Adam PIECZKA, Mark A. Cooper, Frank C. Hawthorne // American Mineralogist ; ISSN 0003-004X. — 2019 vol. 104 iss. 7, s. 1043–1050. — Bibliogr. s. 1050, Abstr.. — tekst: http://www.minsocam.org/MSA/AmMin/TOC/2019/index.html?issue_number=07

Remobilization of Ca and Ti during the contact metamorphism of Karkonosze Granite on basis of tourmaline of the $Ca-series$ from Budniki near Kowary / Mateusz SĘK, Adam PIECZKA // Mineralogia – Special Papers ; ISSN 1899-8518. — Tytuł poprz.: Mineralogia Polonica – Special Papers ; ISSN: 1896-2203. — 2019 vol. 49, s. 81. — Bibliogr. s. 81. — XXVI\textsuperscript{th} meeting of the Petrology Group of the Mineralogical Society of Poland : session: ”Versatile petrology in the Earth sciences research : 24–27 October, 2019, Chęciny. — tekst: http://www.mineralogia.pl/PDFy/mineralogia_special%20papers_49_V8_DRUK.pdf

$Wallkilldellite-(Fe)$ from Rędziny (Rudawy Janowickie Mts., SW Poland) – a preliminary report / Rafał Siuda, Bożena GOŁĘBIOWSKA, Adam PIECZKA, Piotr JELEŃ, Jan Parafiniuk // Mineralogia – Special Papers ; ISSN 1899-8518. — Tytuł poprz.: Mineralogia Polonica – Special Papers ; ISSN: 1896-2203. — 2019 vol. 49, s. 83. — B. Gołębiowska, A. Pieczka – afiliacja: Faculty of Geology, Geophysics and Environmental Protection. — XXVI\textsuperscript{th} meeting of the Petrology Group of the Mineralogical Society of Poland : session: ”Versatile petrology in the Earth sciences research : 24–27 October, 2019, Chęciny. — tekst: http://www.mineralogia.pl/PDFy/mineralogia_special%20papers_49_V8_DRUK.pdf