@article{10_4064_am_12_3_281_321,
     author = {R. Gessing},
     title = {Time-optimal control of plants whose transfer functions contain zeros},
     journal = {Applicationes Mathematicae},
     pages = {281--321},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1971},
     doi = {10.4064/am-12-3-281-321},
     zbl = {0232.49009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-12-3-281-321/}
}