CDC:10.1300/J013v25n02_04 CDC:10.1300/J013v25n04_02 CDC:10.1300/J013v30n04_05 CDC:10.1300/J013v32n04_05 CDC:10.1300/J013v34n01_05 CDC:10.1300/J013v34n03_05 CDC:10.1300/J013v34n04_02 CDC:10.1300/J013v35n01_03 CDC:10.1300/J013v36n02_01 CDC:10.1300/J013v36n04_06 CDC:10.1300/J013v37n03_04 CDC:10.1300/J013v38n01_03 CDC:10.1300/J013v41N02_05 CDC:10.1300/J013v42n02_07 CDC:10.1300/J013v45n01_01 CDC:10.1300/J013v46n02_01 CDC:10.1300/J013v46n02_02 CDC:10.1300/J013v46n02_03 CDC:10.1300/J013v46n02_07 CDC:10.1300/J013v46n02_10 CDC:10.1300/J013v46n02_11 CDC:10.1300/J013v46n02_12 CDC:10.1300/J029v15n03_02 CDC:10.1300/J077v19n03_09 CDC:10.1300/J077v23n04_05 CDC:10.1300/J077v26n02_01 CDC:10.1300/J082v44n34_09 CDC:10.1300/J082v44n34_10 CDC:10.1300/J082v50n01_06 CDC:10.1300/J084v15n02_03 CDC:10.1300/J137v15n02_09 CDC:10.1300/J146v10n03_04