NUCLEO-F103RB - STM32 Nucleo-64 development board with STM32F103RB MCU, supports Arduino and ST morpho connectivity - STMicroelectronics
STM32F103 User Reference Manual Guide - AiPCBA
STM32F103 – Nicer Land
St STM32F101T8
STM32F103RB - Mainstream Performance line, Arm Cortex-M3 MCU with 128 Kbytes of Flash memory, 72 MHz CPU, motor control, USB and CAN - STMicroelectronics
STM32F103 – bepat GmbH & Co. KG
Bare-Metal Programming on STM32F103 Nucleo-64 using STM32CubeIDE