Problems of Education in the 21st Century. 61: Discontinuous. doi:10.33225/pec/14.61.88. ISSN 1822-7864. ↑ Van Dyck, M. (2020), "Mechanical philosophy : science of mechanics", Encyclopedia of early modern philosophy and the sciences, Springer, pp. 1–11, ISBN 978-3-319-20791-9 ↑ Mach, E. (1907).