00754naa#a2200265#i#450# EN\\bibl\101540 20251216201300.2 2076-0655 20200101b2020####ek#y0engy0150####ca RUS RU Calcium pyrophosphate ceramics obtained via firing of cement stone Journal article Moscow Individual Entrepreneur Svetlana Vasilievna Samchenko 2020 3 с. Journal article local Safronova T V Lukina Yu S Sivkov S P Toshev O U Kazakova G K Shatalova T B Filipov Ya Yu Malyutin K V Azizyan-Kalandarag Ya tsilicates.ru