P. Sieńko, The Impact Of Political Decisions On The Possibility Of Implementing The Polish National Security Strategy In The Field of State’s Responsibilities to Critical Infrastructure Protection – monograph prepared for printing in 2020 (UMCS Lublin).
P. Sieńko, Media As The States` Strategic Assets – monograph prepared for printing in 2020 (UMCS Lublin).
P. Sieńko, Legal and economic phenomenon of “debt farming” and the so-called bankruptcy hyenas – case study, prepared for printing in 2020 ( Securitologia, ISSN: 1898-4509 )
P. Sieńko, Methods of securing and controlling critical infrastructure assets allocated in Information And Communications Technology (ICT) sector companies in leading European Union countries, Securitologia, ISSN: 1898-4509, nr 2/2015, str. 107-123
P. Sieńko, Legal aspects of protection and control of strategic state resources accumulated in commercial companies significant for national security and public order, Securitologia, ISSN: 1898-4509, nr 2/2014, str. 37-53
P. Sieńko, Russian policy of pretexts vs. Article 5 of The North Atlantic Treaty – threats and defence possibilities, Securitologia, ISSN: 1898-4509, nr 1/2014, str. 47-65
P. Sieńko, E. Pasternak, „Media communication as part of a country’s information policy in times of democracy”, w: „Media And Democratization”, I. Biernacka-Ligięza (red), Wyd. A. Marszałek, Toruń 2013, str. 65 – 98