Combined Point Intercept formulas
All stereological formulas

- a(p): Area associated with a point
: Number of points

- d: Distance between points
: Number of intersections
This method is based on the principles described in the following:
- Howard, C.V., Reed, M.G. (2010). Unbiased Stereology (Second Edition). QTP Publications: Coleraine, UK. See equations 2.5 and 3.2
- Miles, R.E., Davy, P. (1976). Precise and general conditions for the validity of a comprehensive set of stereological fundamental formulae. Journal of Microscopy, 107 (3), 211–226.