Alexander Delchev - Bc4 Against the Open Games, 2018
1) The material of this book is taken as a basis. Sequences of chapters. Stylistics.
2) The material is expanded with new lines and position estimates based on periodical magazines and games based on Chess Publishing  and Base Comment Games .
Accompanying goods: see books in Russian cbh, pdf:
1 Lakdavaela - Debut Repertoire 1-e4 for positional player, 2019
2 Ripperger - Italian Party, 2007
3 Boris Avrukh - Modern Repertoire vs Italian Game, 2016
The book is made in 3 formats: cbh, pgn,
1) ChessBase 12-15 cbh
2) ChessBase 9-10 pgn
3) Base for mobile and pgn tablets
On request pdf Adobe, Word doc for free.