This is the primary community for Russian bus papercraft. Search for "ЛиАЗ-5293.53 3616" on their official forum.
You will need a utility like 7-Zip or WinRAR to extract the .rar file once downloaded.
Many modelers like "Oboykin" distribute their work through specialized VK (Vkontakte) groups. Search VK for "Бумажные модели автобусов" (Paper bus models). Technical Tips for the File