| 17563 | The strong force pulls, but also pushes apart if nucleons get too close together [Inwagen] |
| 21148 | The strong force is repulsive at short distances, strong at medium, and fades at long [New Sci.] |
| 21152 | The strong force binds quarks tight, and the nucleus more weakly [New Sci.] |
| 21151 | Gluons, the particles carrying the strong force, interact because of their colour charge [New Sci.] |
| 21185 | Colour charge is positive or negative, and also has red, green or blue direction [Hesketh] |