Help in getting full-text articles for COVID-19 research

Good day! I am a researcher in the Philippines trying to get access for these russian articles. If you have any leads in where I can get them it would be greatly appreciated. We have tried requesting from resesarchgate but we need these papers ASAP. Thank you!

1: Romantsov MG, Sologub TV, Petrov AIu, Kovalenko AL. [Cycloferon in emergency prophylaxis of respiratory viral infections and influenza]. Klin Med (Mosk). 2011;89(1):51-4. Russian. PubMed PMID: 21516768.

2: Romantsov MG, Golofeevskiĭ SV. [Cycloferon efficacy in the treatment of acute respiratory tract viral infection and influenza during the morbidity outbreak in 2009-2010]. Antibiot Khimioter. 2010;55(1-2):30-5. Russian. PubMed PMID: 20583555.

3: Romantsov MG, Sel’kova EP, Garashchenko MV, Semenenko TA, Shul’diakov AA, Kondrat’eva EI, Tiuteva EIu, Kovalenko AL. [Improvement of natural resistance in children for prophylaxis of influenza and acute respiratory tract viral infections (results of multicenter randomized trials)]. Antibiot Khimioter. 2009;54(9-10):37-41. Russian. PubMed PMID: 20415263.

4: Sologub TV, Shul’diakov AA, Romantsov MG, Zhekalov AN, Petlenko SV, Erofeeva MK, Maksakova VL, Isakov VA, Zarubaev VV, Gatsan VV, Kovalenko AL. [Cycloferon, as an agent in the therapy and urgent prophylaxis of influenza and acute respiratory tract viral infection (multicentre randomized controlled comparative study)]. Antibiot Khimioter. 2009;54(7-8):30-2, 34-6. Russian. PubMed PMID: 20201401.

5: Ershov FI, Kovalenko AL, Garashchenko TI, Sel’kova EP, Botvin’eva VV, Zhekalov AN, Petlenko SV, Bol’bot IuK, Romantsov MG. [Cycloferon–a new domestic preparation for the prophylaxis of influenza and other acute respiratory viral infections]. Zh Mikrobiol Epidemiol Immunobiol. 2004 Nov-Dec;(6):47-51. Russian. PubMed PMID: 15636140.