Smits-Engelsman, B. C. M., Smit, E., Doe-Asinyo, R. X., Lawerteh, S. E., Aertssen, W., Ferguson, G., & Jelsma, D. L. (2021). Inter-rater reliability and test-retest reliability of the Performance and Fitness (PERF-FIT) test battery for children: A test for motor skill related fitness. BMC Pediatr.

Smits-Engelsman, Bouwien C. M., Eline Smit, Rosemary Xorlanyo Doe-Asinyo, Stella Elikplim Lawerteh, Wendy Aertssen, Gillian Ferguson, and Dorothee L. Jelsma. "Inter-rater Reliability and Test-retest Reliability of the Performance and Fitness (PERF-FIT) Test Battery for Children: A Test for Motor Skill Related Fitness." BMC Pediatr 2021.

Smits-Engelsman, Bouwien C. M., et al. "Inter-rater Reliability and Test-retest Reliability of the Performance and Fitness (PERF-FIT) Test Battery for Children: A Test for Motor Skill Related Fitness." BMC Pediatr 2021.