1. D. Sherman, Measure Resistance and Capacitance without an A/D, AN449, Philips Semiconductors Microcontroller Products, 1993.
2. A. Webjörn, Simple A/D for MCUs without built-in A/D converters, AN477, Motorola Semiconductor, 1993.
3. Implementing Ohmmeter/Temperature Sensor, AN512;Cox,1997
4. Resistance and Capacitance Meter using a PIC16C622, AN611;Richey,1997
5. L. Bierl, Precise measurements with the MSP430, Report, Texas Instruments, 1996.