ICT for informal workers in Sub-Saharan Africa: Systematic review and analysis. - Nasibu Mramba; Joel Rumanyika; Mikko Apiola; Jarkko Suhonen (AFRICON, 2017)

Contemporary Challenges in Street Trader-Customer Interaction Through Mobile Devices in Dodoma, Tanzania. - Joel Rumanyika; Matti Tedre; Mikko Apiola; Solomon Sunday Oyelere; Nasibu Rajabu Mramba (ICT4D (1), 2019)

Mobile technology for street trading in Tanzania: A design science research approach for determining user requirements. - Joel Rumanyika; Mikko Apiola; Nasibu Rajabu Mramba; Solomon Sunday Oyelere; Matti Tedre (Electron. J. Inf. Syst. Dev. Ctries., 2021)