„Optimization of costs vs. better welding effects – new arc power source Welbee by OTC”
„Explanation of approval symbols for Det Norske Veritas”
„Characteristics of symbols for Lloyd’s Register of Shipping”
biuletyn-firmy-mutlimet-nr-01-2007
„Explanation of approval symbols for Det Norske Veritas – submerged arc”
„Quality aspects in the production of welding wires”
konstrukcje-stalowe-nr-4-81-sierpien-2006