Smotrov M. P. RussiaSaratov Saratov State University, 83, Astrakhanskaya St., Saratov, 410012 Author's articles Phase diagrams of the ternary systems NaBH4–NaOH–H2O, KBH4–KOH–H2O, NaBO2–NaOH–H2O И KBO2–KOH–H2O при -10°С