@article{MZ_1981__177_173050,
     author = {Manfred Knebusch and Hans Delfs},
     title = {Semialgebraic {Topology} {Over} a {Real} {Closed} {Field} {I:} {Paths} and {Components} in the {Set} of {Rational} {Points} of an {Algebraic} {Variety.}},
     journal = {Mathematische Zeitschrift},
     pages = {107--130},
     publisher = {mathdoc},
     volume = {177},
     year = {1981},
     zbl = {0438.14018},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__177_173050/}
}