@article{10_4064_am_19_3_4_531_539,
     author = {M. Michalski},
     title = {On a class of polynomially solvable travelling salesman problems},
     journal = {Applicationes Mathematicae},
     pages = {531--539},
     publisher = {mathdoc},
     volume = {19},
     number = {3-4},
     year = {1987},
     doi = {10.4064/am-19-3-4-531-539},
     zbl = {0721.90074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-19-3-4-531-539/}
}