Alexander V. Smirnov 0001 Alexey M. Kashevnik Andrew Ponomarev Context-based infomobility system for cultural heritage recommendation: Tourist Assistant - TAIS. 297-311 2017 21 Pers. Ubiquitous Comput. 2 https://doi.org/10.1007/s00779-016-0990-0 db/journals/puc/puc21.html#SmirnovKP17