Estimation of the $CO_{2}$ process emission in Poland generated by castings production from ferrous alloys — Oszacowanie emisji procesowej $CO_{2}$ z produkcji odlewów ze stopów żelaza / M. HOLTZER, I. Kargulewicz, K. Olendrzyński // Archives of Metallurgy and Materials / Polish Academy of Sciences. Committee of Metallurgy. Institute of Metallurgy and Materials Science ; ISSN 1733-3490. — 2009 vol. 54 iss. 2, s. 421–426. — Bibliogr. s. 426. — I. Kargulewicz – afiliacja: Institute of Environmental Protection, National Administration of Emission Trading Scheme. — “Faculty of Foundry Engineering during 90 years of the AGH University of Science and Technology” : Krakow, 28–29 May 2009. — Warszawa ; Kraków : PAS. Committee of Metallurgy. Institute of Metallurgy and Materials Science, 2009