TY - RPRT TI - Measuring physical self-efficacy in old age. AU - R J Bosscher AU - L Laurijssen AU - E de Boer PY - 1993 DO - 10.2466/pms.1993.77.2.470 UR - https://pubmed.ncbi.nlm.nih.gov/8247667/ ID - 8247667 ER -