Derksen, C., Teich, M., Brady, M., & King, J. (2017). SnowEx17 SnowMicroPen (SMP) Raw Penetration Force Profiles, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ZPOLBRHVWG5V Date Accessed: 2025-12-15
Derksen, Chris, Michaela Teich, Mike Brady, and Joshua King. “SnowEx17 SnowMicroPen (SMP) Raw Penetration Force Profiles, Version 1.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 2017. doi:10.5067/ZPOLBRHVWG5V. Date Accessed: 2025-12-15
Derksen, Chris, et al. SnowEx17 SnowMicroPen (SMP) Raw Penetration Force Profiles, Version 1. NASA National Snow and Ice Data Center Distributed Active Archive Center, 2017, doi:10.5067/ZPOLBRHVWG5V. Date Accessed: 2025-12-15