@article{SF_1980__21_134449,
     author = {F. Pastijn},
     title = {Biordered sets and complemented modular lattices.},
     journal = {Semigroup forum},
     pages = {205--220},
     publisher = {mathdoc},
     volume = {21},
     year = {1980},
     zbl = {0449.20067},
     url = {http://geodesic.mathdoc.fr/item/SF_1980__21_134449/}
}