TY JOUR TI Specifics, problems and opportunities of development of business activity in the market of educational literature for higher education institutions KW the market of book production KW educational literature for higher education institutions KW stagnation of the market KW textbooks KW manuals KW electronic content KW budget financing KW entrepreneurship in the book business JO Russian Journal of Management AU DASHKOV, L.P. PY 2020 IS 7 PB Publishing Center RIOR