Pawn in the cooperative multi-pass mats
Griva Nikolai Vasilevich
Poltava: Publishing "ІnterGrafіka", 2004. - 240p.
Kopyl V.V., Ukraine Grandmaster for chess composition.
Belokon Y. V. - candidate for master of sports сhess compositions.
About order of the books, contact with Kopyl Valery. His contact details can be found on the page "Contacts".