@article{10_2140_agt_2006_6_119,
     author = {Fern\'andez Su\'arez, Luc{\'\i}a and Ghienne, Pierre and Kahl, Thomas and Vandembroucq, Lucile},
     title = {Joins of {DGA} modules and sectional category},
     journal = {Algebraic and Geometric Topology},
     pages = {119--144},
     year = {2006},
     volume = {6},
     number = {1},
     doi = {10.2140/agt.2006.6.119},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2006.6.119/}
}